In any case that reveals a scientific investigation published Thursday by the consumer magazine "Which? Computing "asked a biologist to examine under the microscope more than 30 keyboards in a London office representative.
In the London office "representative", the researcher found that some were sheltering bacteria that showed a high risk of illness to their user, "he explains on its website.
The biologist went so far as to ask for the immediate withdrawal of one that was "five times dirtier than a toilet seat" analyzed to provide a comparison. It exceeded 150 times the limit for the number of harmful bacteria.
"The main cause of infection of a keyboard is due to lunch at his desk, since food leftovers are conducive to the development of millions of bacteria. A poor personal hygiene such as not washing hands after using the toilet may also be involved, "says the magazine.
"Most people do not think the dirt that accumulates on their PC, but if you do not clean your computer, this is tantamount to eat your meal on the toilet," warned Sarah Kidner, editor of Which? Computing which advises its readers to do a spring cleaning.