Simple. Open the door and let them out.
No?
Well, down at the trailer park, we like to shoot 'em with a .22 rifle. Don't try to hit 'em in the air, though. Little buggers can turn on a dime. Wait'll they land...then blast 'em. Makes the trailer leak when it rains, though. Nothing a few old beer cans, a pair of tin snips and a rivet gun can't fix.
No?
OK, I'll behave.
No A/C? No screen door on the balcony? Nothing'll beat a 79 cent plastic flyswatter.