I use a couple of different compressed air products to clean my keyboards for my desktop computers and my laptops. Even though I still have to clean between the keys with a cotton swab or folded paper towel, this helps to get dust and lint out from under the keys. I try not to eat near my computers but it happens and that means crumbs; even a small piece under a key on your keyboard can cause problems with keystrokes registering correctly when you are typing. When you use this with the thin straw that is packaged with this you can direct the flow of air to specific sections of the keyboard; that can help knock things loose and prevent issues when typing. When I use this on my laptop I only use short quick bursts because I get worried about the pressure being a little too much and don't want to damage anything under they keys. I am a little more liberal when I use this on my computer keyboards because if I damage them I can replace them. I also use this on hard-to-reach things like the inside of cassette decks and when my older VCR's aren't playing correctly because of dust on the heads. I always unplug my electronics before I use this compressed air on them because I am terrified of something happening to them while I am using this on them. I don't recommend holding down the button for more than a few seconds at a time because the can gets extremely cold. That will eventually prevent more compressed air from coming out and you will have to wait for it to come back to room temperature before you can use it again.