Janitorial interview questions

Three clients make up most of your revenue, and one of them just got a new facility director. What do you do?

Situational · Customer concentration

Strong answer

Meets the new director quickly, reviews service results and contract terms, protects that relationship, and starts a plan to win more mid-size accounts so no client can sink the company.

Red flags

Assumes the relationship will carry over, or has no plan to spread the risk.

A national janitorial company is underbidding you on renewals in your market. How do you respond?

Situational · Competitive strategy

Strong answer

Competes on quality, response time and local management, shows clients their service data, keeps prices that cover fair wages, and lets go of accounts that only buy on price.

Red flags

Matches every low bid and cuts wages or crew hours to make it work.

Tell me about a big decision you made with incomplete information, such as bidding a large contract or entering a new market. How did you decide?

Behavioral · Deciding under uncertainty

Strong answer

Says what they knew and didn't, how they limited the downside (a pilot, a shorter term, an exit clause), what they decided, the result, and what they'd do differently.

Red flags

Waited for perfect information, or made a gut call with no thought to risk.

Tell me about a leader you developed who later ran part of the business.

Behavioral · Developing leaders

Strong answer

Describes how they spotted the person, gave stretch work and coaching, let them make decisions, and what the person achieved.

Red flags

Has no example, or kept all decisions to themselves.

How would you decide whether to bid on public contracts such as schools or city buildings?

Technical · Public-sector bidding

Strong answer

Weighs prevailing wage rules, bonding, insurance limits, the procurement process, payment timing and the compliance work needed against the margin and steady volume.

Red flags

Bids because the contracts are large.

You're opening a branch in a city two hours away, starting with one anchor contract. How do you set up leadership there?

Situational · Expanding to a new city

Strong answer

Puts a proven manager or a strong local hire in charge with clear authority and reporting, plans night supervision from day one, sets the numbers that decide whether to keep growing there, and visits often early on.

Red flags

Runs it from headquarters with no one local in charge at night.

Most quality complaints come from five of your forty buildings. How do you find out why?

Situational · Diagnosing problem sites

Strong answer

Compares those sites on staffing, hours budgeted versus needed, supervisor visits, turnover and client expectations, walks them at night, and fixes the cause at each.

Red flags

Replaces the crews at those sites without finding the cause.

How would you build a safety program for night crews who often work alone in client buildings?

Technical · Night-crew safety

Strong answer

Check-in and check-out with a missed-check alert, chemical and equipment training, slip prevention, rules for strangers and alarms, incident reporting and a review of every near miss.

Red flags

Hands out a safety binder at hire.

Tell me about a time you grew operations quickly without losing quality.

Behavioral · Scaling with quality

Strong answer

Describes hiring and training ahead of need, systems that held, and quality numbers through the growth.

Red flags

Grew fast and fixed quality after clients complained.

Tell me about a time a manager who reported to you changed your mind.

Behavioral · Open-minded leadership

Strong answer

Shows they listened to the evidence, changed course, and gave the manager credit.

Red flags

Can't think of a time.

A labor shortage leaves you short-staffed at ten sites. What do you do this week?

Situational · Staffing triage

Strong answer

Ranks sites by contract terms and risk, covers critical tasks first, tells affected clients what will be done, limits overtime fatigue, and pushes recruiting and pay review.

Red flags

Spreads crews thin everywhere without telling clients.

Supervisors spend most of their night driving between buildings instead of supervising. What do you change?

Situational · Supervisor coverage

Strong answer

Redraws zones so each supervisor's buildings are close together, sets a manageable number of sites each, adds lead janitors at large sites, and uses inspection tools to target visits.

Red flags

Tells supervisors to visit more sites.

How would you structure contract pricing so wage increases don't wipe out margin over a multi-year deal?

Technical · Contract pricing protection

Strong answer

Builds in escalation tied to wage changes or an index, sets reopeners for scope changes, keeps terms short enough to adjust, and models the margin each year before signing.

Red flags

Signs flat pricing for the whole term and hopes costs hold.

As you win bigger clients, the average time to get paid keeps growing. What do you do?

Situational · Working capital

Strong answer

Tracks days to collect by client, fixes invoice accuracy and portal setup, negotiates terms up front, and sets up a credit line before it's needed.

Red flags

Waits it out, or factors receivables without comparing the cost.

Tell me about a cost-control program you led that was still working a year later.

Behavioral · Lasting cost control

Strong answer

Explains what they changed, how managers owned it, and the numbers that showed it lasted.

Red flags

Describes a one-time cut that crept back.

Tell me about a forecast you built that leaders used to make a real decision.

Behavioral · Forecasting for decisions

Strong answer

Explains the decision, the drivers in the model, how they tested assumptions, and how close it came.

Red flags

Only describes budgets nobody used.

Workers' compensation costs jumped after several slip and strain injuries on floor-care crews. What do you do?

Situational · Workers' comp costs

Strong answer

Reviews the loss runs with operations, funds training and better equipment, sets up a return-to-work program, and explains how the experience rating affects future bids.

Red flags

Treats it as an insurance problem only and shops for a cheaper policy.

The CEO wants to buy a smaller janitorial company. What do you check before you agree?

Situational · Acquisition diligence

Strong answer

Contract terms and whether they can be assigned, customer concentration, wage-hour compliance, key managers, real earnings after owner adjustments, and how many clients are likely to stay.

Red flags

Looks at revenue and the asking price only.

A large client wants to switch from night cleaning to day cleaning to save on lights and security. How do you plan it?

Situational · Day-cleaning conversion

Strong answer

Walks the building with the client, sorts tasks that can move to daytime (trash, restroom checks, quiet vacuuming) from those that stay after hours (floor work), re-prices the labor and supervision, sets noise rules, and pilots one floor.

Red flags

Says yes and keeps the same crew plan and price.

Which numbers do you use to judge whether a building contract is healthy?

Technical · Contract health

Strong answer

Revenue per labor hour, actual versus budgeted hours, supply cost, inspection scores, complaints, crew turnover at that site and margin.

Red flags

Whether the client is complaining.

Tell me about a time you turned around a failing account.

Behavioral · Turning around accounts

Strong answer

Explains how they found the cause, the plan, how they rebuilt trust with the client, and the result.

Red flags

Lost it, and can't say what they learned.

Tell me about a time you had to let go of a supervisor. How did you handle it?

Behavioral · Letting go of a supervisor

Strong answer

Clear expectations, documented gaps, real support, a fair decision, and a plan to cover the sites after.

Red flags

Avoided it until a client complained.

Night-crew turnover is so high that you're always training. What do you do?

Situational · Night-crew retention

Strong answer

Checks pay against local rates, supervisor quality, schedules and transportation, asks people who stay and leave, and fixes the top cause.

Red flags

Hires more people faster.

A client says an item went missing from an office your cleaner services. What do you do?

Situational · Theft allegations

Strong answer

Takes it seriously, works with the client on badge and camera records, moves the cleaner to another site without loss of hours while it's reviewed, involves HR, and decides on facts.

Red flags

Fires the cleaner right away, or denies it without checking.

A facility manager emails at [7 a.m.]: the restrooms were dirty this morning for the third time this month. What do you do?

Situational · Repeat client complaints

Strong answer

Replies quickly, visits that night, inspects, checks whether the crew has enough time and supplies, fixes the cause, and does a joint walk-through with the client.

Red flags

Apologizes by email and tells the crew to do better.

During a night inspection, you find a cleaner asleep in a client's break room. What do you do?

Situational · Handling misconduct

Strong answer

Wakes them and checks they're okay, documents it, handles it under the company's policy, and looks at whether the shift schedule or workload is a factor.

Red flags

Takes a photo to shame them, or ignores it.

How do you run a site inspection that both your company and the client trust?

Technical · Trusted inspections

Strong answer

Uses a scoring form tied to the contract's tasks and frequencies, photos, regular joint walk-throughs with the client, and trend tracking with fixes noted.

Red flags

Walks the site alone and decides if it looks okay.

Tell me about a time you enforced a safety rule your crew didn't like, such as goggles when pouring concentrate or wet-floor signs on every mop job.

Behavioral · Enforcing safety rules

Strong answer

Explained the reason (the injury it prevents), made it workable, such as keeping signs and goggles on every cart, held to it every shift, and checked it stuck.

Red flags

Dropped it after complaints.

Tell me about a time you kept several sites running while you were short-staffed.

Behavioral · Short-staffed coverage

Strong answer

Prioritized by contract, communicated with clients, used overtime carefully, and kept people safe.

Red flags

Tried to clean everything themselves and let supervision lapse.

At the end of a shift, a cleaner tells you they lost a client's master key and alarm fob. What do you do?

Situational · Lost keys and building security

Strong answer

Tells the client contact right away, checks that the building was locked and the alarm set, retraces the cleaner's route, follows the contract on rekeying, updates the key log, and reviews how keys are carried.

Red flags

Waits a day to see if the key turns up, or doesn't tell the client.

A new client requires background checks for everyone working at their site. How do you handle it?

Situational · Client-required background checks

Strong answer

Gets written disclosure and consent, applies checks only to staff assigned there, follows FCRA and local fair-chance steps including an individual review and notices, and offers other sites to anyone who isn't cleared.

Red flags

Runs checks on everyone and fires anyone with a record.

What training records would you keep for night cleaners, and how would you keep them current?

Technical · Training records

Strong answer

Hazard communication, bloodborne pathogens for staff with exposure, equipment training, client site orientations, all with dates, refresher reminders and quick retrieval for audits.

Red flags

A signed handbook page in each file.

Many applicants for night shifts don't show up for their interviews. What do you change?

Situational · Hiring for night shifts

Strong answer

Interviews within a day of applying, sends text reminders, offers evening times, explains the job clearly up front, and tracks show rates by source.

Red flags

Blames the applicants and keeps the same process.

Tell me about a workplace investigation you led from start to finish.

Behavioral · Investigations

Strong answer

Interviewed separately, documented, stayed neutral, reached a conclusion on evidence, and followed through on the outcome.

Red flags

Made a decision before talking to everyone.

Tell me about a time you reduced turnover in an hourly workforce.

Behavioral · Reducing hourly turnover

Strong answer

Names the causes found, the specific changes, and the before-and-after numbers.

Red flags

Ran a recognition program and didn't measure the result.

A supervisor wants to fire a cleaner who missed shifts after a workplace injury. What do you do?

Situational · Protecting injured workers' rights

Strong answer

Stops the action, checks the injury claim status, leave and accommodation obligations, gets the facts on the absences, and makes sure nothing looks like retaliation.

Red flags

Approves it because attendance policy is attendance policy.

Most leads come from small offices, but the company wants medical offices and schools. How would you go after them?

Situational · Targeting new verticals

Strong answer

Builds messages around the training and disinfecting process those clients care about, targets lists and partners like property managers, and uses case stories only with permission.

Red flags

Runs the same ads with new pictures.

How would you track a commercial lead from first contact to signed contract?

Technical · Lead-to-contract tracking

Strong answer

CRM stages from inquiry to walkthrough, proposal and signed contract, lead source on every record, win rates by source and the revenue each source produced.

Red flags

Counts form fills and calls.

Sales wants a flyer that says 'hospital-grade disinfecting that kills all germs.' What do you do?

Situational · Accurate claims

Strong answer

Checks the claims against the actual product labels, removes absolute claims like 'all germs', describes the real process, and gets review before printing.

Red flags

Prints it because competitors say the same thing.

Tell me about a campaign aimed at office or school facility managers. How did you measure whether it worked?

Behavioral · Measured business-to-business campaigns

Strong answer

Names the audience, offer and channels, and ties results to walkthroughs booked, proposals sent and contracts won, not just clicks.

Red flags

Reports impressions and likes.

Tell me about a time you got testimonials or case stories from business clients.

Behavioral · Getting client testimonials

Strong answer

Asked at the right moment, made it easy, got written approval, and used the result in sales.

Red flags

Wrote a quote and attributed it to a client.

The website gets steady traffic but very few requests for walkthroughs. What do you look at?

Situational · Website conversion

Strong answer

Checks the forms work, page speed, how clear the request button is, and whether pages speak to facility managers, then tests one change at a time.

Red flags

Buys more traffic.

A client says they were billed for nightly service on holidays when their building was closed. What do you do?

Situational · Billing accuracy

Strong answer

Checks the contract's holiday terms and the service logs, issues a credit if they're right, explains it to the client, and fixes the billing setup.

Red flags

Refunds without checking, or refuses without looking.

What documents would you keep for each building contract, and how would you track the ones that expire?

Technical · Contract records

Strong answer

The contract and scope, certificates of insurance, bonds, key and badge logs, required training records and any client clearances, with expiry dates in a tracker that sends reminders.

Red flags

Keeps the signed contract in a folder.

A client's purchase order ran out mid-year, but they still expect service. What do you do?

Situational · Purchase orders

Strong answer

Tells the client's contact right away, asks for a new purchase order before more invoices go out, keeps operations informed, and tracks it until it arrives.

Red flags

Keeps billing against the old order and hopes it gets paid.

Tell me about a time you set up a filing or tracking system that other people actually used.

Behavioral · Systems people use

Strong answer

Kept it simple, involved the users, trained them, and checked it was being used.

Red flags

Built something only they understood.

Tell me about a time you caught a costly billing mistake, such as extra work never billed or a client charged twice.

Behavioral · Catching costly errors

Strong answer

Explains how they caught it (a check against the contract or service log), how they fixed it with the client, and the check they added so it wouldn't repeat.

Red flags

Can't recall one.

A client asks for proof that every cleaner at their site has had safety training. You have until Friday. What do you do?

Situational · Audit readiness

Strong answer

Pulls the training records for that site's roster, finds gaps, works with operations to train anyone missing, and sends a clear summary on time.

Red flags

Sends a general statement that everyone is trained.

You just won a large office contract that starts in three weeks. What do you do to get ready?

Situational · Starting a new contract

Strong answer

Builds a staffing plan from the hours needed, hires and trains, sets up keys, badges, supplies and equipment, walks the site with the client, and supervises closely for the first weeks.

Red flags

Moves crews from other sites the night before.

How do you figure how many labor hours a building needs each night?

Technical · Workloading

Strong answer

Square footage by space type, task frequencies from the scope, restroom fixture counts and production rates, then checks the estimate against timed work in the first weeks.

Red flags

Uses what the last cleaner did, or a flat rate per building.

Overtime has climbed at four sites while their inspection scores dropped. What do you do?

Situational · Overtime and quality

Strong answer

Checks staffing gaps, turnover and whether the hours budget fits the scope, fixes schedules, and talks to clients if the scope changed.

Red flags

Bans overtime without finding the cause.

Tell me about a building contract you lost over service quality. What warning signs did you miss?

Behavioral · Learning from lost accounts

Strong answer

Names the signs they missed (falling inspection scores, repeat complaints, a supervisor change, turnover at the site), owns their part, and what they do differently now, such as monthly client walk-throughs.

Red flags

Blames price or the client.

Tell me about a time you managed supervisors at sites you couldn't visit often.

Behavioral · Managing remote supervisors

Strong answer

Set clear goals and reports, used data and spot checks, and held regular one-on-ones.

Red flags

Trusted them completely and checked only after complaints.

A cleaner reports that a client employee keeps making unwanted comments during the evening shift. What do you do?

Situational · Harassment from client staff

Strong answer

Makes sure the cleaner is safe and supported, reports it to HR, raises it with the client contact, offers a site change without loss of hours, and follows up.

Red flags

Tells the cleaner to avoid that person.

How would you train new cleaners on chemical safety in their first week?

Technical · Chemical safety training

Strong answer

Covers labels, safety data sheets, protective gear, dispensers and dilution, what never to mix and spill response, with a hands-on demonstration and a sign-off.

Red flags

Has them watch a video and sign a form.

Complaints about streaky, dull floors have risen at several sites. What do you do?

Situational · Floor-care quality

Strong answer

Checks dilution, pads, mop water changes, burnishing frequency and training at those sites, finds the common cause, retrains, and re-inspects.

Red flags

Orders a different floor finish.

Tell me about a time you made a process consistent across several sites or crews.

Behavioral · Standardizing across sites

Strong answer

Wrote it down, trained leads, checked it in the field, and adjusted where it didn't fit.

Red flags

Sent a memo and assumed it was followed.

Tell me about a time your training changed results you could measure.

Behavioral · Training results

Strong answer

Names the problem, the training, and the change in scores, complaints or injuries.

Red flags

Measured how many people attended.

A medical office client wants proof your crews follow the right disinfecting process. What do you give them?

Situational · Healthcare clients

Strong answer

A written procedure naming the registered disinfectant and its contact time, training records including bloodborne pathogens, color-coding rules, and audit results.

Red flags

A letter saying the crew uses strong products.

How do you decide whether a surface needs cleaning, sanitizing or disinfecting?

Technical · Clean, sanitize, disinfect

Strong answer

Cleaning removes soil, sanitizing lowers germs (such as on food-contact surfaces), and disinfecting kills the germs on the label when left wet for the contact time; touch points and restrooms get disinfected after cleaning.

Red flags

Thinks they're all the same thing.

A rep wants to drop the price on a large bid below your target margin to win it. What do you do?

Situational · Pricing discipline

Strong answer

Reviews the hours and scope with the rep, checks whether the client values something besides price, sets a walk-away point, and considers the precedent it sets.

Red flags

Approves it to hit the quarter's number.

How do you build a bid for a nightly office cleaning contract?

Technical · Bid building

Strong answer

Walkthrough, square footage by area, scope and frequencies, production rates to labor hours, wages with taxes and benefits, supplies, equipment, supervision, overhead and margin, with assumptions written into the proposal.

Red flags

Uses a price per square foot from the last job.

Tell me about a time you built or rebuilt a sales pipeline.

Behavioral · Building pipeline

Strong answer

Explains the target accounts, activities and conversion rates, and the revenue that came from it.

Red flags

Waited for inbound leads.

Tell me about a time you built onboarding so new reps could walk a building and write an accurate cleaning bid.

Behavioral · Onboarding sales reps

Strong answer

Had new reps shadow walkthroughs, practice takeoffs on made-up or past floor plans with labor hours checked by operations, review won and lost bids, and get signed off before bidding alone; names how bid accuracy improved.

Red flags

Handed new reps the price sheet and sent them out.

A new account starts in two weeks, and operations says they can't staff it on time. What do you do?

Situational · Sales and operations handoff

Strong answer

Works with operations on a realistic start plan, tells the client honestly, and fixes how sales checks capacity before promising start dates.

Red flags

Tells operations to figure it out.

Much of your revenue comes up for renewal in the next six months. What's your plan?

Situational · Protecting renewals

Strong answer

Ranks renewals by size and risk, holds service reviews with each client, fixes open issues with operations, and plans price adjustments early.

Red flags

Waits for clients to send renewal notices.

Walk me through a maintenance plan for auto-scrubbers and burnishers used across many buildings.

Technical · Floor machine maintenance

Strong answer

Daily operator checks (tanks emptied and rinsed, squeegees, pads, batteries), scheduled service by hours, a log per machine, and loaners ready for breakdowns.

Red flags

Fixes machines when they break.

Supply requests from site supervisors come by text, email and phone, and orders get missed. What do you change?

Situational · Supply request flow

Strong answer

Sets one request method with a daily cutoff, builds pick lists from it, plans delivery routes, and confirms when orders ship.

Red flags

Tells supervisors to call twice.

A site needs a burnisher tonight, but your only spare is waiting on a part. What do you do?

Situational · Covering equipment gaps

Strong answer

Looks at moving one from a site with lighter needs tonight, renting one, or adjusting the floor schedule, and tells the supervisor which plan is happening.

Red flags

Says there's nothing available.

Tell me about a time you reorganized a storeroom or warehouse so people could find things faster.

Behavioral · Organizing storage

Strong answer

Explains the layout change, labels and locations, and how much time it saved.

Red flags

Cleaned up once and it went back to messy.

Tell me about a time you got a team to return equipment in good shape.

Behavioral · Equipment accountability

Strong answer

Set a check-in standard, tracked condition by user, and followed up consistently.

Red flags

Complained but had no system.

A crew member is charging floor machine batteries in a closed storage closet. What's the risk, and what do you do?

Technical · Battery charging safety

Strong answer

Knows charging lead-acid batteries can release hydrogen gas, moves charging to a ventilated area, bans sparks and smoking there, and supplies eye protection and gloves for watering batteries.

Red flags

Sees no problem as long as the charger works.

A facility manager calls: there's a big spill in the lobby and they want someone there within the hour. What do you do?

Situational · Urgent daytime requests

Strong answer

Gets details (what spilled, where, any hazard), checks for a day porter or nearby crew, gives an honest arrival time, passes it to dispatch, follows up, and logs it.

Red flags

Promises an hour without checking who can go.

A client says their office smells strongly of chemicals every morning. What do you do?

Situational · Investigating odor complaints

Strong answer

Takes details on where and when, logs it, asks the supervisor to check products and dilution that night, and calls the client back with what was found.

Red flags

Says it's just the smell of clean and does nothing.

A client emails a service request. What details do you capture so the night crew can act on it?

Technical · Capturing service requests

Strong answer

Exact location, the task, deadline, access, the client contact, whether it's in the contract or a billable extra, and a confirmation back to the client.

Red flags

Forwards the email to the crew as is.

Tell me about a time a customer kept calling about the same problem. What did you do?

Behavioral · Repeat callers

Strong answer

Took ownership, found why the fix wasn't sticking, got the right person involved, and closed the loop with the customer.

Red flags

Kept logging the same complaint and passing it along.

Tell me about a time you coordinated a customer's request with a team you couldn't see in person, such as a night crew. How did you make sure it got done?

Behavioral · Coordinating unseen teams

Strong answer

Wrote down exactly what was asked, passed it on with location and deadline, got confirmation such as a note or photo that it was done, and told the customer.

Red flags

Relayed messages without checking anything got done.

A client asks you to add carpet extraction next week. It isn't in their contract. What do you do?

Situational · Scope and extra work

Strong answer

Confirms it's outside the contract, explains it's extra, gets a quote and written approval through the right person, and schedules it once approved.

Red flags

Books it for free, or quotes a price they don't have authority to give.

At [8 p.m.], the cleaner assigned to a medical office calls out. That site requires a cleaner trained in bloodborne pathogens. What do you do?

Situational · Matching training to sites

Strong answer

Finds a trained backup from the roster, adjusts the rest of their route, tells the supervisor, and lets the client know if the start time changes.

Red flags

Sends whoever is free without checking their training.

A crew's key card doesn't work at a building, and the client contact isn't answering. What do you do?

Situational · After-hours access problems

Strong answer

Tries the building's after-hours security or backup contacts, keeps the crew safe and nearby for a set time, moves them to their next site, and logs it for a morning follow-up.

Red flags

Tells the crew to find another way in, or sends them home without telling anyone.

How would you build nightly routes for fifteen cleaners covering twenty-five buildings with different access times?

Technical · Nightly routing

Strong answer

Starts from each building's access window and budgeted hours, groups by distance, matches training and site clearances, and keeps a backup plan for call-outs.

Red flags

Assigns buildings by who asks first.

Tell me about a time you were tracking many people or jobs at once, such as crews across several sites, and one went wrong. What did you do?

Behavioral · Tracking many people at once

Strong answer

Names how they noticed (a missed check-in, a call), fixed that one without losing track of the rest, and the change they made to catch it earlier, such as a check-in alert.

Red flags

Found out the next morning from a complaint.

Tell me about a time you had to give a worker news about their schedule they didn't want to hear.

Behavioral · Delivering bad news

Strong answer

Told them early, explained why, listened, and offered what flexibility they could.

Red flags

Texted it at the last minute with no explanation.

Your tracking app shows a cleaner clocked in at a site, but their location shows them across town. What do you do?

Situational · Time and location mismatches

Strong answer

Calls them neutrally to check (it may be an app error), verifies with the site if needed, tells the supervisor, and documents what they found.

Red flags

Accuses them right away, or ignores it.

How would you set up the books so the owner can see which building contracts make money?

Technical · Job costing by building

Strong answer

Gives each building its own job or class code, codes labor hours and supply invoices to the site, records extra work separately, and produces a monthly profit report by building.

Red flags

Keeps one pool of costs, so no one can tell a good contract from a bad one.

A supply vendor's invoice for one building is three times last month's. What do you do before paying it?

Situational · Vendor invoice review

Strong answer

Checks it against the purchase order and what was received, asks the site supervisor whether usage changed, looks for a pricing or coding error, and holds payment until it's explained.

Red flags

Pays it because the vendor is regular, or rejects it without asking.

Payroll is due Friday, and the time clock export shows several night cleaners with missed punches. What do you do?

Situational · Missed punches

Strong answer

Doesn't guess or drop hours, has supervisors confirm actual hours with each cleaner, records the corrections with approval, pays all hours worked on time, and flags the sites with repeat missed punches.

Red flags

Pays only the punches on record, or fills in scheduled hours without checking.

Tell me about a time a bank, payroll or vendor balance didn't tie out and you couldn't explain it at first. How did you work it out?

Behavioral · Investigating discrepancies

Strong answer

Walks through the steps (pulled the detail, matched line by line, asked the right person), names the cause, such as a duplicate payment or labor coded to the wrong building, and what they changed.

Red flags

Wrote it off as a rounding difference.

Tell me about a time you had to tell a manager they were coding costs, such as supplies or labor, to the wrong building or account.

Behavioral · Correcting others' coding

Strong answer

Showed the effect on the reports, explained the right way simply, and made it easy to get right next time.

Red flags

Fixed it silently every month, or lectured the manager.

Walk me through how you close the month for a cleaning company with dozens of building contracts.

Technical · Month-end close

Strong answer

Reconciles bank and card accounts, checks every contract was invoiced, accrues unbilled extra work and unpaid payroll, reviews the receivables aging, then reviews profit by building for anything odd.

Red flags

Waits until all bills come in, then runs the reports.

Paper towel and trash liner use at one building jumped this quarter, but the building's occupancy didn't change. What do you do?

Situational · Spotting shrinkage

Strong answer

Checks deliveries against usage, asks the supervisor about dispenser or client changes, looks at storage security, and reports findings without accusing anyone.

Red flags

Just ships more supplies.

How would you set par levels for the supply closets at twenty client buildings?

Technical · Par levels

Strong answer

Uses each building's usage history, delivery frequency, closet space and occupancy, sets a minimum and maximum per item, and audits closets on a schedule.

Red flags

Stocks every closet the same.

A client with a green cleaning policy asks you to switch their building to certified green products and paper. What do you check before you switch?

Situational · Green product requests

Strong answer

Asks which certifications the client accepts (such as Green Seal, UL ECOLOGO or EPA Safer Choice), checks dispenser fit, cost and the contract, gets the safety data sheets and dilution rates, and briefs the account manager and crews.

Red flags

Orders whatever says green on the label and lets the crew figure out the dispensers.

Tell me about a time you cut waste or shrinkage in supplies such as paper, liners or chemical concentrate.

Behavioral · Cutting waste

Strong answer

Explains what the numbers showed, the cause they found (overfilled dispensers, no dilution control, unlocked closets), the control they added, and the drop in usage.

Red flags

Tells people to be careful, with no measured change.

Tell me about a time you worked with a vendor to fix a recurring delivery problem.

Behavioral · Vendor problem-solving

Strong answer

Documented the pattern, met with the vendor, agreed on a fix, and tracked whether it held.

Red flags

Complained each time without a fix.

What do you check when a delivery of cleaning chemicals arrives?

Technical · Receiving chemicals

Strong answer

Counts against the order, checks for leaks and damage, confirms labels, makes sure there's a safety data sheet for any new product, and stores items apart by type.

Red flags

Signs for it and stacks it.

Walk me through a building walkthrough for a nightly cleaning bid. What do you measure and ask?

Technical · Walkthrough discovery

Strong answer

Square footage by space type, floor types, restroom fixtures, occupancy, access hours, security rules, special areas, who supplies paper goods, current problems and who decides.

Red flags

Gets the total square footage and leaves.

A facility manager says their current cleaner is cheaper and they just want a number. What do you do?

Situational · Selling on value

Strong answer

Asks what isn't working now, confirms the scope, and gives a proposal that shows what the price covers and how quality is checked.

Red flags

Gives a lower number without understanding the problem.

A facility manager asks for proof of insurance and bonding and wants to know how your cleaners are hired and trained. How do you answer?

Situational · Truthful credentials

Strong answer

Answers only with what the company really does, has the office send a certificate of insurance and bond details, explains hiring and training plainly, and doesn't promise checks or training the company doesn't do.

Red flags

Says yes to everything to keep the deal moving.

Tell me about the longest sales cycle you've closed. How did you keep it moving?

Behavioral · Long sales cycles

Strong answer

Kept in touch with value, mapped decision-makers, and set clear next steps.

Red flags

Followed up with 'just checking in' messages.

Tell me about a cleaning contract you lost to a lower bid. What did you learn about how the client decided?

Behavioral · Learning from price losses

Strong answer

Explains what they'd do differently earlier, such as walking the building with the real decision makers, showing the labor hours behind the price, or learning that service complaints mattered more than price.

Red flags

Says the client was cheap.

A medical office prospect asks for references from other medical clients, and you only have office clients. What do you do?

Situational · Honest references

Strong answer

Is honest, offers the closest references, explains the training and process for medical sites, and doesn't stretch the truth.

Red flags

Implies they have medical clients.

Your lead asks you to mop a hallway near the main entrance while people are still leaving the building. How do you do it?

Situational · Wet-floor safety

Strong answer

Puts out wet floor signs first, mops one side at a time to leave a dry path, watches for people, and picks up signs only when the floor is dry.

Red flags

Mops the whole hallway at once with no signs.

You're asked to use a chemical you've never used before. What do you do before you use it?

Situational · Learning new chemicals

Strong answer

Asks the lead to show them, reads the label for dilution and protective gear, uses the dispenser instead of guessing, and knows where the safety data sheet is.

Red flags

Guesses how much to use, or skips gloves because it's only for a minute.

How would you set up and keep your cleaning cart during a shift so it's safe and ready?

Technical · Cart setup

Strong answer

Labeled bottles only, restroom tools kept separate, liners and gloves stocked, and the cart never left blocking a hallway or unattended with chemicals in public areas.

Red flags

Whatever fits, and parks it wherever they stop.

Tell me about a time at work, school or volunteering when you finished a task and found out you'd done it wrong. What did you do?

Behavioral · Fixing your own mistakes

Strong answer

Owned it, fixed it, and asked how to do it right next time.

Red flags

Blamed the instructions, or left it.

Tell me about a time at work, school or volunteering when you kept up a routine every day, even when it got boring.

Behavioral · Steady routine

Strong answer

Gives a specific example and how they kept quality up, such as a checklist or a personal standard.

Red flags

Admits they cut corners once it got dull.

While restocking a restroom, you find a soap dispenser broken and leaking onto the counter. What do you do?

Situational · Reporting broken fixtures

Strong answer

Cleans up the spill, puts out a temporary soap if they can, and reports it to the lead so it goes in the log for the client.

Red flags

Wipes the counter and says nothing.

You're cleaning an office building after hours. Someone in business clothes knocks on the locked front door, says they work there and forgot their badge. What do you do?

Situational · Building security

Strong answer

Politely doesn't let them in, points them to building security or the contact on the site instructions, and reports it to their supervisor.

Red flags

Lets them in to be helpful.

While emptying trash in a law office, you find a stack of papers that looks like it fell into the bin. What do you do?

Situational · Confidentiality

Strong answer

Doesn't read it or throw it away, sets it on the desk or follows site instructions, leaves a note if allowed, and only empties what is clearly trash.

Red flags

Throws it all out, or reads it to decide.

Walk me through how you clean and disinfect a public restroom.

Technical · Restroom cleaning and disinfecting

Strong answer

Wet floor sign, gloves, restock, clean high to low with restroom-only cloths, clean before disinfecting, leave disinfectant wet for the label's contact time, never mix products, floor last.

Red flags

Sprays and wipes everything with one cloth.

You find a small amount of blood on a restroom floor. How do you handle it?

Technical · Blood cleanup

Strong answer

Blocks off the spot, then, if trained, follows the bloodborne pathogens procedure: gloves, absorb, clean, disinfect with the approved product for its contact time, bag waste per the plan, and report it; if not trained, calls the lead.

Red flags

Mops it up with the regular mop and bucket.

Tell me about a time you worked alone with nobody checking on you. How did you make sure the work was done right?

Behavioral · Working without oversight

Strong answer

Used a checklist or routine, checked their own work, and left notes on anything they couldn't finish.

Red flags

Did what seemed enough, with no way to check.

Tell me about a time you noticed a safety hazard at work. What did you do?

Behavioral · Reporting hazards

Strong answer

Made it safe if they could, reported it right away, and followed up until it was fixed.

Red flags

Assumed someone else would report it.

Two of your crew don't show up tonight, and you have a three-floor office building to finish before [6 a.m.]. What do you do?

Situational · Short-crew priorities

Strong answer

Tells the supervisor, covers restrooms, break rooms, trash and visible areas first, reassigns the crew, and writes down what was skipped so the client can be told.

Red flags

Has everyone do what they can and says nothing about what was missed.

Walk me through stripping and refinishing a vinyl tile floor.

Technical · Floor refinishing

Strong answer

Signs and closes the area, asks whether older nine-inch tile or black mastic has been tested for asbestos, applies stripper at the right dilution without letting it dry, scrubs, picks up slurry, rinses until clean, then lays thin coats with dry time between.

Red flags

Can't describe the steps, skips rinsing and drying, or runs an aggressive pad on old tile without asking about asbestos.

Tell me about a time you trained a new cleaner who was struggling to keep up.

Behavioral · Training slow starters

Strong answer

Watched them work, found the specific slowdown, showed a better routine, and checked back until they were on pace.

Red flags

Did their work for them, or reported them without helping.

Tell me about a time a client complained about your crew's work.

Behavioral · Handling client complaints

Strong answer

Listened, checked the work, fixed it, told the client what changed, and coached the crew.

Red flags

Defended the crew without checking.

At [2 a.m.], you find the door to a client's server room propped open with a chair. What do you do?

Situational · Securing sensitive areas

Strong answer

Doesn't go in beyond what's needed, secures the door per site instructions, reports it right away to the supervisor or site contact, and notes the time.

Red flags

Ignores it because the room isn't on the cleaning list.

A crew member is using a floor machine with a frayed power cord. What do you do?

Situational · Equipment safety

Strong answer

Stops the work, unplugs and tags the machine out of service, reports it, and gives the crew member another task or machine.

Red flags

Tapes the cord and keeps going.