A keyboard can be a dirty place and should be cleansed for the health of your keyboard and those that sit behind a keyboard. So to-day I bought one of these handy mini vacuum cleaners with accessories.
Dust is an enemy of your computer, your camera etc. So not only keep malware at bay, but also keep the dust from your hardware away,
I think a mini-vac would be as much use as a chocolate ashtray, they are just so under powered. Turning the keyboard upside down and lightly tapping it will usually be enough. Better still is a can of compressed air.
I just buy a new keyboard, this one I bought on ebay a Benq for 99p I was very surprised it is a very nice PS2 keyboard (I don’t need full gaming/media KB, etc.) as I’m not too impressed with wireless. The postage wasn’t expensive either but at £1.99, it was more than the KB ;D
I wish I had bought 5 and bundled them for future replacements.