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Commercial cleaning is a skill when done professionally, with clear and strict processes in place to minimise the threat of cross‑contamination. These processes aren’t just “nice to have” — they’re essential for maintaining safe working practices and protecting the people who use a building every day.
One of the simplest but most effective ways to achieve this is by following a colour‑coding system. But what exactly is colour coding in cleaning, and how does it work?
Colour‑coded cleaning was first introduced in the 1990s for hospitals and clinical environments, where hygiene standards must be exceptionally high. The system proved so effective that it quickly spread across the wider cleaning and catering industries. Today, it’s widely recognised as best practice for any business that wants to maintain consistently high hygiene standards.
There are typically four key colours used in the commercial cleaning sector. Each colour is assigned to a specific area of a building, and the British Institute of Cleaning Science (BICSc) provides clear guidance on how these colours should be used. At Green Fox Cleaning, we fully adhere to these standards across all sites we clean.
In the simplest terms:
you don’t use the same mop or cloth in a toilet that you then use in a kitchen or office.
Colour coding makes this mistake far less likely and helps maintain a safe, hygienic environment.
There are four main colours used in commercial cleaning. Each one has a specific purpose.
Red cloths, mops and buckets should only ever be used in washrooms, including toilets and urinals. These areas carry the highest risk of contamination.
Blue equipment is used in offices, hallways, reception areas and other general spaces where the risk of contamination is low.
Green cloths, mops and buckets are used in kitchens, canteens, restaurants and anywhere food is prepared or served.
Yellow equipment is used in treatment rooms, hospital wards, GP surgeries and similar environments where hygiene is critical.
This simple system helps ensure that cleaning tools never move from a high‑risk area to a low‑risk one.
A wide range of cleaning tools can be colour coded. This makes it easy for staff to grab the correct equipment instantly and for managers to audit cleaning practices at a glance.
Common colour‑coded items include:
Using colour‑coded versions of these tools helps keep cleaning processes consistent and reduces the risk of cross‑contamination.
Even with a colour‑coding system in place, mistakes can still happen. Some of the most common include:
Not replacing worn or faded equipment
Mixing equipment between sites
Not training new staff properly
Using multi‑purpose sprays across all areas
Storing equipment incorrectly
Avoiding these mistakes helps maintain the integrity of the colour‑coding system.
At Green Fox Cleaning, colour coding isn’t just a guideline — it’s a core part of our training and daily operations.
Our training includes:
This ensures every cleaner understands not just what to do, but why it matters.
Colour coding offers several important advantages:
Of course, none of this matters if your commercial cleaning company doesn’t fully train their staff in colour coding and its importance, as well as all other aspects of cleaning.
Sticking to colour‑coded equipment ensures there is no cross‑contamination during the cleaning process. It prevents harmful bacteria from being transferred around a premises and helps reduce the risk of infection.
To find out about our professional, fully colour‑coded and reliable commercial cleaning services — and how we can help improve the appearance of your premises — click here to contact your LOCAL office.
It prevents cross‑contamination by ensuring cleaning tools are only used in the correct areas.
In the UK, the British Institute of Cleaning Science (BICSc) provides the most widely used guidelines.
Not always — which is why choosing a company that trains staff properly is essential.
