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I've often thought about the kind of crap that's on my keyboard. But what can I, as just one person, do about this horrible problem?

BBC NEWS | UK | Keyboards 'dirtier than a toilet'

Consumer group Which? said tests at its London offices found equipment carrying bugs that could cause food poisoning.

Out of 33 keyboards swabbed, four were regarded as a potential health hazard and one harboured five times more germs than one of the office's toilet seats.

Microbiologist Dr Peter Wilson said a keyboard was often "a reflection of what is in your nose and in your gut".