Everyday cleaning makes a workplace look clean. Disinfection makes it hygienically safe — reducing the viruses and bacteria that spread colds, flu, norovirus and other infections through an office, school or care setting. Getting the balance right protects staff, cuts absence, and in regulated environments is part of meeting your duty of care. This guide explains what effective infection control looks like in a commercial setting.
Cleaning vs. disinfecting vs. sanitising
- Cleaning removes dirt and most germs from a surface using detergent and water. It is the essential first step.
- Disinfecting uses chemicals to kill germs on a surface. It works best after cleaning, because dirt shields microbes from the disinfectant.
- Sanitising lowers germs to a level considered safe by public-health standards.
The practical rule: clean first, then disinfect. A surface disinfected without cleaning is rarely as safe as it looks.
Contact (dwell) time: the step most people miss
Every disinfectant has a contact time — the number of minutes it must stay wet on a surface to actually kill germs. Wiping a product straight off defeats it. A professional team works to the manufacturer’s stated dwell time and uses products with proven efficacy (for example to BS EN 14476 for virucidal activity), which is what separates genuine disinfection from a quick wipe-down.
High-touch points to prioritise
Infection spreads fastest through surfaces many hands share. These deserve daily attention:
- Door handles, push plates and handrails
- Light switches and lift buttons
- Shared desks, phones, keyboards and mice
- Kitchen and kettle areas, taps and fridge handles
- Washroom taps, flush handles and dispensers
- Reception desks, card machines and touchscreens
Mapping and scheduling these touch points is a core part of any commercial cleaning programme.
When to call a specialist disinfection service
Routine disinfection belongs in the daily clean. A dedicated disinfection cleaning is warranted when the risk steps up:
- A confirmed outbreak (norovirus, flu or COVID-19) on site
- Before re-opening a closed or void space
- Healthcare, education and care environments with vulnerable people
- After a deep clean, as a final hygienic reset
Specialist methods such as fogging or electrostatic spraying reach surfaces manual wiping misses, and are always paired with — never a substitute for — thorough cleaning of high-touch points.
Infection control in higher-risk settings
Healthcare and education carry a stricter standard. In clinical spaces, colour-coded equipment, correct product selection and documented schedules matter as much as the clean itself — see our approach to healthcare cleaning.
Frequently asked questions
Is fogging on its own enough?
No. Fogging and electrostatic spraying are effective finishing steps, but surfaces should be cleaned first and high-touch points wiped by hand — disinfectant cannot kill germs it cannot reach through dirt.
How often should high-touch points be disinfected?
At least daily in a normal office, and more frequently in busy, shared or higher-risk spaces. During an outbreak, increase frequency and extend to all shared surfaces.
Do you use safe, approved products?
Yes — products with proven virucidal/bactericidal efficacy, used to the stated dwell time, with COSHH data and method statements provided.
Protect your people and cut avoidable absence. Crystal Facilities Management delivers scheduled disinfection and infection-control cleaning across London and the UK. Request a free site survey.
Written & reviewed by Crystal Facilities Management — ISO 9001-certified commercial cleaning and facilities management.
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