edit: Brad- Isnt that what cleaning deposits are for? I've been a promoter and venue manager both before, and I can remember at least one occasion where the ravers trashed the place so bad I didn't even bother and let the venue keep my $2000 cleaning deposit knowing full well that they guy that venue hired only charged them $500. And I recall more than once where I quite literally went to home depot for some "parking lot day laborers" to clean a theatre after the people that rented our venue left it trashed, also at great profit to my boss the venue owner.