When you purchase a can of compressed air, it comes with a thin straw taped to the side of the can. However, if you find there's no gunk underneath, you may have a dead key, which is a bigger problem for you because Apple will have to replace the keys (which could take several days).
We'll show you a technique that works well and will help keep you from emptying a whole can of air for nothing. But you don't want to just aim and shoot because you may miss some of the hidden debris or lodge it further under the key. If your first instinct is to reach for a can of compressed air to clean underneath those keys, you're on the right track. It's annoying and keeps you from working as efficiently as you could. This happens when dust, crumbs or other gunk gets stuck under a key and keeps it from depressing easily. If you've noticed you have to press down hard on your MacBook's ( $930 at eBay) keyboard to get it to work, you may have sticky key syndrome. Got sticky keys? Grab a can of compressed air.
