Disinfectant vs Sanitiser vs Cleaner: What's the Difference?
Cleaning, sanitising and disinfecting aren't the same. Learn what each does, which to use at home or in care settings, and how to use disinfectants safely.
Medically reviewed by Doctoright Medical Review Panel · Written by Doctoright Editorial Team
Updated on · 2 min read
Key takeaways
- Cleaning removes dirt and many germs; sanitising reduces germs to safer levels; disinfecting kills most germs on surfaces.
- Always clean visible dirt first: disinfectants work poorly on dirty surfaces.
- Disinfectants need the right 'contact time': the surface must stay wet for the time on the label.
- Never mix bleach with ammonia, acids or other cleaners; store disinfectants away from children.
Supermarket shelves are full of products promising to kill "99.9% of germs". But cleaning, sanitising and disinfecting each do different jobs. Knowing the difference helps you use the right product in the right place, without overusing harsh chemicals.
Three levels of clean
| What it does | Typical products | Best for | |
|---|---|---|---|
| Cleaning | Removes dirt, grease and many germs from surfaces | Soap, detergent, water | Everyday cleaning of most surfaces |
| Sanitising | Reduces germs to a level considered safe | Sanitising sprays and wipes; hand sanitiser for skin | Kitchen counters, toys, food contact surfaces |
| Disinfecting | Kills most bacteria and viruses on surfaces | Bleach (sodium hypochlorite), hydrogen peroxide, quaternary ammonium compounds, alcohol based surface disinfectants | High touch surfaces when someone is ill, bathrooms, care settings |
Hand sanitiser is for skin; surface disinfectants are for hard surfaces. Never use surface disinfectants on skin.
When do you need to disinfect?
For most homes, regular cleaning with soap or detergent is enough. Disinfect when:
- someone at home has an infection such as diarrhoea, vomiting or flu
- you're caring for a bedridden person, newborn or someone with weak immunity
- surfaces are contaminated with blood, vomit, urine or stool
- you're cleaning bathrooms and toilets
How to disinfect properly
- Clean first. Wipe away visible dirt with soap and water: dirt shields germs and inactivates many disinfectants.
- Read the label. Check which germs it kills and what surfaces it's safe for.
- Respect the contact time. The surface must stay visibly wet for the time stated (often 1 to 10 minutes). Wiping it dry immediately reduces effectiveness.
- Ventilate the room and wear gloves.
- Rinse food contact surfaces afterwards if the label says so.
- Store safely, in the original container, out of reach of children.
Focus on high touch surfaces
Door handles, light switches, taps, toilet flush handles, mobile phones, remote controls, bed rails and tabletops.
Safety: never mix chemicals
- Bleach + ammonia (found in some glass cleaners) releases toxic chloramine gas.
- Bleach + acids (such as vinegar or some toilet cleaners) releases chlorine gas.
- Bleach + alcohol can form harmful compounds.
Use one product at a time and rinse between products.
Sanitisers for hands
For hands, washing with soap and water is best, and alcohol based sanitiser with at least 60% alcohol is a good backup. Read our guide to hand hygiene.
In care settings at home
When caring for a bedridden family member, clean and disinfect bed rails, commodes, bedside tables and bedpans daily, and use disposable underpads to reduce contamination of mattresses. See caring for a bedridden patient.
How we reviewed this article: 3 sources
Doctoright has strict sourcing guidelines and relies on peer reviewed studies, academic research institutions and medical associations. Learn more.
- Centers for Disease Control and Prevention. When and how to clean and disinfect your home.
- US Environmental Protection Agency. Six steps for safe and effective disinfectant use.
- World Health Organization. Hand hygiene: why, how and when?
Last medically reviewed on 9 October 2026. Originally published 18 September 2026.