I tend to let any insect found in the house out a door or a window but if it scares one of my daughters I've got to kill it to stop them being upset.one exception to this rule was inside a dead bird one of our cats had thoughtfully left at the back door.I let it sit for longer than I should have and when I went to lift it yesterday it was a writhing mess of feeding maggots.I went at it like Shaun of the Dead battering a zombie,with my spade,until every one of the wee fuckers was squashed.felt good