Since a large ant walked into the vents on the back of my MBP three days ago causing repeated rattling noises coming from the interior for several hours (like the ant had gotten half-stuck in one of the fans or the hard drive), I've gotten super-scared/anal about stuff getting into the laptop. I still don't know for sure whether the ant caused any lasting damage and whether he/she's still in there. So I have a general question: what could have been damaged by this animal or what could be damaged by future invaders or the occasional food crumb falling into the keyboard and/or speaker holes? Secondly, what can I do to clean the laptop? Is it safe to hold a vacuum cleaner to the air vents, keyboard, speakers, or is there a danger of destroying something (like the speaker membrane) due to the suction?