Updated
What a nightly office clean should include, room by room
What you'll learnA room-by-room nightly checklist built around the surfaces people touch, and a two-minute morning check that shows whether the work was done. Plus the Ontario rule that now puts a washroom cleaning record on the wall.
What should a nightly office clean include?
Every night: empty garbage and recycling, clean the washrooms and kitchen, vacuum or mop the floors, and wipe the surfaces people touch, meaning door handles, light switches, faucet and appliance handles, shared phones and keyboards, and reception counters. Write the touchpoints down and check them, because hospital audits show those small surfaces are the ones cleaners most often miss (Carling, Infection Control and Hospital Epidemiology).
Cleaners clean what looks dirty
It is natural to judge the cleaners by the floor and the bins. Those are easy to see, which is exactly the problem. The surfaces that carry germs around an office are small, look clean, and are the first to get skipped. So write the nightly clean as a list of touchpoints and check it touchpoint by touchpoint.
Dr. Philip Carling of Boston University School of Medicine measured this directly. His team put invisible fluorescent dots on standard high-touch surfaces in 23 hospitals, then checked which dots had been wiped after cleaning. Only 49% were cleaned overall. Door knobs and light switches averaged under 30%, while sinks and toilet seats were over 75% (Carling et al., 2008).
Put that next to a tracer study presented by University of Arizona microbiologist Dr. Charles Gerba. Researchers placed a harmless virus on one or two surfaces, such as a door knob, at the start of the day in office buildings. Within 2 to 4 hours it turned up on 40 to 60% of the people and commonly touched objects they tested (American Society for Microbiology, 2014).
The surface most likely to be skipped is the one that seeds the rest of the office. The audits were done in hospitals, so applying them to offices is an inference, though a reasonable one. The lesson holds: a nightly clean should be written, and checked, as a list of touchpoints.
The nightly checklist, room by room
The touchpoints below follow the list the Canadian Centre for Occupational Health and Safety uses for workplaces: door handles, sink handles, counters, elevator buttons, microwave and refrigerator handles, printers, coffee makers and vending machines (CCOHS).
| Area | Every night | Touchpoints to wipe |
|---|---|---|
| Reception and entrances | Vacuum or mop, clean entrance glass as needed, tidy seating | Door handles and push plates, reception counter, elevator buttons, light switches |
| Desks and shared tech | Wipe clear desk surfaces, empty bins | Chairs (arms), shared phones, shared keyboards and mice, printer and photocopier panels |
| Kitchen and break room | Clean counters, sink and tables, empty and reline bins | Faucet handles, microwave, fridge and dishwasher handles, coffee maker, vending buttons |
| Washrooms | Clean toilets, sinks, mirrors and floors, restock paper and soap, update the posted cleaning record | Flush handles, stall locks, grab bars, faucets, soap and paper towel dispensers, door handles |
| Floors | Vacuum carpet, damp-mop hard floors with microfibre | Not applicable |
| Garbage and recycling | Empty all bins, reline, take to the building's collection point | Bin lids and pedals |
Two rows deserve extra attention. In a study of 90 offices in New York, San Francisco and Tucson, chairs and phones carried the most bacteria of the five desk surfaces tested (Hewitt, Gerba, Maxwell and Kelley, PLoS ONE, 2012). The study was part-funded by Clorox.
Kitchens are the other hot spot. Swabs taken by Kimberly-Clark Professional, with Dr. Gerba consulting, found high contamination readings on 75% of break room faucet handles and 48% of microwave handles (Kimberly-Clark Professional, 2012). Kimberly-Clark sells wipes and the test measures organic residue rather than specific germs, so treat the figures as directional.
Ontario washrooms now come with a paper trail
Since July 1, 2025, Ontario employers must keep the washrooms they provide for workers "in a clean and sanitary condition" (Occupational Health and Safety Act, s. 25.3). The Act's definition of an industrial establishment includes an office building, so offices are covered.
Since January 1, 2026, the record has to be posted in or near the washroom, or posted electronically with directions for workers, and it must show the date and time of the two most recent cleanings (O. Reg. 480/24). Alexander Steele, a partner, and Tish Lewis, an associate, at McCarthy Tétrault summarized the same requirements for employers (McCarthy Tétrault, 2024).
The rules set no cleaning frequency. They do make a missed night visible to everyone who uses the washroom, which matters because washrooms drive complaints: one cleaning-supply maker cites contractor survey data putting restrooms at over 45% of office building complaints (Tork, 2023). That source sells washroom dispensers, and its figure comes from 185 cleaning contractors rather than tenants.
One boundary: the duty covers washrooms provided by the employer. In a multi-tenant building where the landlord provides the washrooms, ask the landlord or property manager who keeps the record.
Stronger chemicals don't make a cleaner office
Coverage matters more than chemistry. Dr. William Rutala of the University of North Carolina tested floor mops in 24 hospital rooms per condition. Microfibre with plain detergent removed 95% of microbes against 68% for cotton string mops, and adding disinfectant did not improve on microfibre's 95% (Rutala, Gergen and Weber, 2007). The study received no funding.
The U.S. Environmental Protection Agency documented a similar switch at UC Davis Medical Center, where microfibre mops also cut water and chemical use by 95% (U.S. EPA, 2002). There is a health angle too. Researchers at the University of Bergen following 6,235 people for more than 20 years found faster lung-function decline in women who worked as cleaners, and co-author Øistein Svanes said microfibre cloths and water are "more than enough for most purposes" (American Thoracic Society, 2018).
The honest counterweight: for respiratory viruses, surfaces are a smaller risk than the germy-office genre suggests. The U.S. CDC estimated each contact with a contaminated surface has less than a 1 in 10,000 chance of causing a COVID-19 infection, and said detergent cleaning is enough in most situations (CDC, 2021). Rutgers microbiologist Emanuel Goldman argued the surface risk had been exaggerated outside hospitals (Goldman, The Lancet Infectious Diseases, 2020).
Stomach bugs are different. The Public Health Agency of Canada lists norovirus's infectious dose as fewer than 10 virus particles and notes it spreads through contaminated surfaces (PHAC). So the sensible default is detergent and microfibre on every touchpoint every night, with disinfectant on washroom and kitchen touchpoints when a stomach bug is going around.
What a night crew can't do
A nightly clean resets the office. It cannot hold it all day. In the same tracer work, the virus spread within hours of the workday starting, and the reductions of 80% or more came from staff using disinfecting wipes and hand hygiene during the day (American Society for Microbiology, 2014).
The peer-reviewed version, led by Dr. Kelly Reynolds at the University of Arizona in an office of about 80 employees, found the same thing: hand sanitizer, wipes and tissues used by staff significantly reduced the tracer on hands and shared surfaces (Reynolds et al., 2016). One co-author worked for Kimberly-Clark. Pair the night clean with wipes at shared stations and sanitizer by the kitchen.
A two-minute morning check
You can check a nightly clean without standing over the crew. In Dr. Carling's follow-up across 36 hospitals, marking specific surfaces, checking them and giving the cleaning staff feedback raised thoroughness from 48% to 77% (Carling et al., 2008).
- 01
Pick five touchpoints
A door handle, a light switch, the kitchen faucet, the microwave handle and a flush handle. Rotate them weekly.
- 02
Mark them after close
A dab from an invisible UV marker pen works the way the hospital audits did. In the morning, a small UV torch shows whether each mark was wiped.
- 03
Read the washroom record
Check that the last two cleanings are logged with dates and times, as Ontario now requires.
- 04
Report misses the same day
Send the cleaner the list of what was missed. Marking, checking and feedback together moved the hospital numbers.
At Néa, anything missed and reported within 24 hours of a clean gets a return visit to fix it, at no extra charge. The checklist above is a starting point: the free walkthrough is where your office's version gets scoped, with a written quote within one business day of the visit. If you are replacing a cleaner, our guide on how to switch cleaning companies without a gap covers the handover.
Common questions
How often should office washrooms be cleaned in Ontario?
Ontario law does not set a number. Since July 1, 2025 employers must keep the washrooms they provide clean and sanitary, and since January 1, 2026 a record of the two most recent cleanings must be posted in or near the washroom or electronically. For a staffed office that realistically means at least a daily clean.
What do office cleaners do each night?
A nightly clean usually covers garbage and recycling, washrooms, the kitchen, floors, and wiping the surfaces people touch, such as door handles, light switches, faucet and appliance handles, and shared phones and keyboards. The exact list should be written into your agreement so both sides can check it.
Does a nightly clean stop people in the office getting sick?
Not on its own. Tracer studies at the University of Arizona found a virus spread across an office within hours of the workday starting, and the big reductions came from staff using wipes and hand hygiene during the day. A nightly clean resets the office; daytime habits keep it that way.
Should office cleaners use disinfectant every night?
Usually not. A University of North Carolina study found microfibre with plain detergent removed 95% of microbes from floors and adding disinfectant did not improve on microfibre, and the CDC's COVID-19 guidance said detergent cleaning is enough in most situations. Disinfect washroom and kitchen touchpoints when a stomach bug is going around.
More on this service: after-hours office and commercial cleaning.
