Short answer
Cleaning removes dirt and lowers the number of germs on a surface. Sanitizing lowers the germs left after cleaning to levels public health codes consider safe, and disinfecting kills the harmful germs left on a surface after cleaning. CDC's advice for most businesses is to clean high-touch surfaces regularly and disinfect when there's a reason, like a high-traffic area or a spot where someone was sick, using an EPA-registered product exactly as the label says.
Public health guidance in plain words. It isn't legal or medical advice. If your business is a healthcare office, a child care center or a food business, your own rules come first.
People use these three words like they mean the same thing. They don't. A cleaning company quote that says "sanitize all surfaces" might mean a wipe with soapy water. A product that says "disinfects" only does it if you follow the label. Here's how CDC and EPA describe each one, and what it means for a normal office, store, gym or church.
What's the difference?
CDC's guidance for facilities gives each word a different job.
| Process | What it does, per CDC | What it usually takes | Where it fits in a business |
|---|---|---|---|
| Cleaning | Removes dirt and lowers the number of germs on surfaces | Soap or detergent, water, scrubbing, wiping | Every surface, every visit |
| Sanitizing | Lowers the germs left after cleaning to levels public health codes consider safe | A product labeled as a sanitizer for that surface | Food-contact surfaces, toys and play surfaces in child care |
| Disinfecting | Kills harmful germs left on surfaces after cleaning | An EPA-registered disinfectant, used per the label | Restroom fixtures, high-touch points, spots where someone was ill |
CDC's page for early care and education settings uses the same split. Cleaning removes germs, dirt and impurities. Sanitizing reduces germs to levels public health codes consider safe. Disinfecting destroys germs that remain.
Why does cleaning have to come first?
Dirt gets in the way. CDC says to clean surfaces before sanitizing or disinfecting them, because dirt and grime can make it harder for the chemicals to kill germs. EPA's six steps for disinfectant use say the same thing. Pre-clean the surface if it's visibly dirty or if the label calls for it.
That's why "spray and wipe" on a dirty restroom counter doesn't do much. The first wipe should remove the grime. The disinfecting step comes after.
When does a business need to disinfect?
For most offices, stores, gyms, schools and churches, CDC's facility guidance is practical:
- Clean high-touch surfaces regularly. CDC's examples include pens, counters, shopping carts, door handles, stair rails, elevator buttons, touchpads, restroom fixtures and desks.
- Clean other surfaces when they're visibly dirty.
- In high-traffic areas, you may choose to clean more often or disinfect on top of cleaning.
- Disinfect areas where people have obviously been ill, such as after someone vomits.
So a good scope doesn't say "disinfect everything." It names the surfaces that get disinfected, like toilets, urinals, sinks, faucet handles, door handles and push plates, and lets the rest of the building get a solid cleaning.
Healthcare is different. CDC says its facility guidance isn't meant for healthcare settings or other places with specific rules. For patient-care areas, CDC's healthcare recommendations call for cleaning and disinfecting high-touch surfaces like doorknobs and light switches more often than surfaces people barely touch. Our medical office cleaning page covers how we split that work with clinical staff.
What does contact time mean?
Contact time is the time a disinfectant must stay on a surface to work. EPA's guidance says to find it in the product's directions and keep the surface wet the whole time. CDC says the same.
Contact times vary a lot between products. Some are short and some are several minutes. If a cleaner sprays a bathroom counter and wipes it dry right away, that counter got cleaned, not disinfected. When you compare cleaning companies, ask what product they use on restroom fixtures and how long they leave it on.
How do you read a disinfectant label?
EPA's six steps start with the label.
- Check the EPA registration number. It's a unique ID for that product. You can look it up on EPA's lists of registered disinfectants.
- Read the directions. Check the use sites and surface types. A product made for hard, nonporous surfaces isn't meant for fabric chairs.
- Pre-clean if the surface is dirty or the label says to.
- Follow the contact time.
- Wear gloves and wash your hands after you take them off.
- Lock it up. Keep lids tight and products away from children.
EPA groups registered products into lists by the germs they've been tested against. List N covers the virus that causes COVID-19. List S covers bloodborne pathogens like HIV and hepatitis B and C. List K covers C. diff spores. A medical practice worried about one germ needs a product whose label claims that germ.
Safety basics for any building
- Never mix products. CDC warns that mixing products or chemicals can be hazardous, and its bleach page says never to mix bleach with ammonia or any other cleaner. Our guide on products you should never mix has the details.
- Protect skin and eyes. CDC recommends gloves or goggles when splashes are possible.
- Ventilate. CDC suggests opening doors and windows and using fans or the HVAC system to move air.
- Store products out of reach of children, especially in daycares, schools and church nurseries.
- Keep safety data sheets handy. OSHA's hazard communication rule requires employers whose chemicals could expose another employer's workers to give that employer access to the safety data sheets. If a cleaning company works in your building, it's fair to ask for them.
What should your cleaning scope say?
A clear scope removes the guessing. Look for:
- Which surfaces are disinfected, and how often.
- Which product is used for disinfecting, and whether it's yours or the cleaning company's.
- That label directions, including contact time, are followed.
- Who handles special situations, like a sick child at a daycare or blood in a medical office.
- What isn't included, so nobody assumes.
Our guide to what a janitorial contract should cover walks through the rest of the scope.
How we handle it at V&V
We clean every surface on your list, and we disinfect the restroom fixtures and touch points your scope names, following the product label. If your business has chosen its own disinfectant, like many medical and dental offices do, we can use yours. We won't promise that our cleaning makes you meet any health regulation. That's your plan, and our job is to follow it.
Common questions
Is sanitizing the same as disinfecting?
No. CDC describes sanitizing as reducing the germs left after cleaning to levels public health codes consider safe. Disinfecting goes further and kills harmful germs left on surfaces. The product label tells you which one it does and on what surfaces.
Do I need to disinfect my whole office every night?
Usually not. CDC's facility guidance says to clean high-touch surfaces regularly, clean other surfaces when they're visibly dirty, and consider disinfecting in high-traffic areas or where someone has been sick. Restrooms and touch points are where disinfecting usually earns its keep.
What is contact time on a disinfectant?
It's how long the surface has to stay wet with the product for it to work. EPA says to find it in the directions and keep the surface wet the whole time. If you wipe it dry early, you didn't disinfect.
What is EPA List N?
List N is EPA's list of disinfectants expected to kill the virus that causes COVID-19 when used as the label directs. EPA also keeps other lists by germ, such as List S for bloodborne pathogens and List K for C. diff spores.
Does a cleaning company's disinfecting make my building meet health rules?
No cleaning company can promise that. Healthcare offices, child care centers and food businesses have their own rules, and CDC's general facility guidance says it isn't meant for healthcare or other specially regulated settings.
Need a cleaning crew for your building?
V&V cleans offices, clinics, schools and churches across Dallas-Fort Worth.
Sources
- CDC: When and How to Clean and Disinfect a Facility (16 Apr 2024) (accessed Oct 8, 2026)
- CDC: How To Clean and Disinfect Early Care and Education Settings (19 Apr 2024) (accessed Oct 8, 2026)
- EPA: 6 Steps for Safe and Effective Disinfectant Use (PDF) (accessed Oct 8, 2026)
- EPA: Selected EPA-registered disinfectants (updated 24 Aug 2026) (accessed Oct 8, 2026)
- EPA: About List N, Disinfectants for Coronavirus (COVID-19) (accessed Oct 8, 2026)
- CDC: Recommendations for Environmental Infection Control in Health-Care Facilities (reviewed 11 Jan 2024) (accessed Oct 8, 2026)
- CDC: How to Safely Clean and Sanitize with Bleach (26 Aug 2026) (accessed Oct 8, 2026)
- OSHA 29 CFR 1910.1200, Hazard communication (accessed Oct 8, 2026)