While computers tend to run in clean environments, this is not always the case. Any environment might contain a lot of dust and animal hair, and even the seemingly cleanest room will eventually ...

I tend to go through a lot of cans of air duster when cleaning computers, optical media, etc. The cheapest I can find are the Fellowes 'Air Duster' (1,1,1,2-Tetraflouroethane) for about $5 at Wal-Mart ...