In the pic above we deep cleaned some anti-slip tiles in Hertfordshire. These ties are actually pretty hard to clean as they grab your cloth or whatever one uses to clean them with. They also hold allot of dirt.
You can see in the pic how much cleaner they look after the deep clean on account of the amount of grime they hold. These tiles are usually found in high traffic areas with human excrement such as swimming pools, public bathrooms etc and can get very unhygienic. Its best to have anti-slip tiles cleaned on a regular basis.
The cleaning process for anti slip tiles
I prefer a detailed hand scrubbing cleaning method for anti-slip tiles as one needs to be able to focus in on each tile and get into the grout lines properly. Its a slow process but once they are clean they are clean! Anti slip tiles are usually durable porcelain and so we can use pretty strong alkaline and acidic detergents to deep clean them.