A new UK study shows that keyboards swabbed from an ordinary London office had more harmful bacteria than—you know what's coming—a toilet seat. Yeeks! The accompanying survey showed that most users clean their keyboard infrequently (if at all), and clean their mouse even less often. Here's what you do: shut down your PC, unplug your keyboard and mouse, shake out any dust, lint and other crap, and wipe 'em down with disinfectant alcohol wipes. Right this very minute. For a more thorough cleaning which involves disassembly and compressed air, see this step by step guide. Or if there's just one or two rogue crumbs you'd like to fish out from between the G and H keys, use a piece of sticky tape. Photo by basibanget.