if its big enough ill scream until someone else gets rid of it, which also usually results in them chasing me with said dead bug for about 5 minutes. if its a silverfish, its dead. those things freak me out. they move too fast. if its a small spider, its dead. i try to let flies out of the house by way of the door, but sometimes they cant find it. my little brother insists on standing with the door open, so theyve become a pretty regular site.