I bought a thing called a "keyboard skin"...it is the best ...just a very thin layer of plastic that fits over your keyboard..you can take it off and shake the dust off, or bring it to the sink and wash it..very cheap, too..it's a real time saver, keeps the
keyboard clean, you can easily see through it, and i've had mine a couple years now, so they are very tough! Go on E-bay or google them..greatest invention ever!