I heard about not using the canned air. So, I started using my hand vac - I duct taped a drinking straw to the hose and it worked rather well as long as I left a space open in the tape to release some of the suction. (or the straw just sucked shut!)
More recently, I bought a little gizmo that was supposed to be a vacuum for a sewing machine. TOTAL waste of money. It didn't have the power to lift a bit of lint let alone clean out an area of the machine. So, never to pass on a chance to make lemonade out of lemons, I combined the two. I used the attachment pieces from the tiny useless vac, and taped it onto the tubing from the handvac. Yeah baby! That works like a charm.