Question about Cyber Clean Home&Office

It does however degrade over time even if you don't use it - it's still 'slime' so temperature does have an effect.

I bought mine a bit over a year ago, it's still in the good color range, but it's now a lot smaller, sticky and bits are getting stuck to your fingers/keyboard etc.

I don't know exactly how long it is antibacterial. If you have a lot of dirt in the keyboard, it will simply become disgusting to use the part relatively soon, as it simply absorbs the dirt. I think 5-10 uses should be enough :)