If you work from a notebook all the time, odds are you end up using that notebook around food and other items that could fall between the keys and create problems for you down the road. The only way to keep your keyboard from getting gummed up is to keep food away from it and to keep a keyboard cover on the machine.
iSkin has announced that its ProTouch classic keyboard cover is now available for the 11" MacBook Air. The keyboard protector has Microban technology inside to kill germs and if the cover gets dirty, you can take it off and wash it under your faucet.
Other than keeping germs and crumbs away from your keyboard, the covers will also help keep keys from yellowing over time and will help keep the letters on the keys from rubbing off too. The Classic design is offered in clear only.