38. Messy House
If they like the house clean, then let it get dirty, really dirty. And by dirty, I mean really dirty, like don't flush the toilet or clean anything, if you can stand it. This tactic is quite severe but has been known to remove even the worst of roommates. However, this wont work if they are slobs themselves which maybe the reason they became the roommate from hell in the first place. However, if they ARE slobs you might try moving their stuff around so that they can't find anything :)