Drastic times call for drastic measures. Find a used computer dealer or look around for any sort of 'windows xp inside' or better yet, an 'optimized for vista' decal.
Put it on your mac in a place where the ants can see it.
After the smart ants have fled, and dumb ones that stayed in the machine have sickened and died, vacuum out your pro, and remove all traces of the sticker or decal.
I'd further suggest having a priest do an exorcism and then blessing your machine via irc, or preferably, iChat.
Clyde, that is the funniest...how about just running XP on bootcamp instead of OS X for a few days?
cathyy, i am sorry i was in a foul mood and did not mean to hijack the thread. Now that i have taken my meds, i can offer some constructive comments, although we will need the help of other experts:
1-Microwave: find out if ants are sensitive to microwave and if so then if the MBP is more or less sensitive than they are and consider zapping them
2-Oven: find out if ants survive 100 degrees celsius and consider putting the MBP in the oven just short of its melting temperature, although that may cause any sugar in the crumbs if they were cookies to stick together
3-Freezer: find out if ants are sensitive to cold and stick the MBP in the fridge or freezer and then slowly thaw to avoid condensation
4-"Reverse Osmosis": lure the ants OUT of the MBP by placing a large amount of crumbs just outside the MBP causing a mass exodus to re-establish their colony outside of the MBP
5-"Smoke 'em out": although GW is no longer president, some of his techniques still work and this method holds promise: place mbp in an box and light a nearby smoky fire, and "smoke" the ants out of the MBP
6-Install Windows 98 using VMWare or Parallels or DOS 3.01 and play space invaders, that usually results in spontaneous ant apoptosis (kind of like suicide) when they hear the sound when the invaders are about to hit bottom after loosing all bases. Another option is to play Demis Roussos or Yani on itunes overnight for 3 nights in a row.
I hope this helps?...
____
Ok seriously now, i would use some of that anti-ant powder, sprinkle a tiny amount on the keyboard and speaker grille (literally tiny speck) then air-spray the powder off and under the keys to get some of it inside where the crumbs may have gone then wipe the keyboard and outside in case the anti-ant powder is toxic to humans. If that does not work, you may want to take it apart and clean it as recommended above. Sorry for previous "humor".