I was told not to use the canned air for the same reasons already posted - push stuff further into machine and there is some moisture that comes out of the can.
I bought a 1 gal. shop vac at Ace Hardware and a set of the small vac pieces to use with it. It works just fine and gets the fuzzies out easily. A 1" cheap paint brush from any store works fine also (the ones with the wooden handle and hair bristles on it).