Can anyone suggest a way to clean a Macbook built-in keyboard? Some keys make some kind of clicking sound as if there is something stuck around. I doubt that there has been something that makes this clicking sound. In my previous laptops before mac, I was taking apart the whole thing and clean the area under the keyboard which was usually very dusty. Things are totally different here, the upper part of the Mac is unremovable so it seems to me not easy to do extensive cleaning.