>>5001937came here to post this
Flies have such fast response time, that we appear to be moving in slow motion even if you swat them as fast as you can.
You VERY SLOWLY move a cup ontop of one, and to them they won't even see it as a moving object. It's super easy to trap them if you just go slowly. Wait till they're resting on a window, capture n release.
>>5001656they're natural explorers, much like humans. They're see your home as a cave and are mapping the interior. It's not their fault the exit open/close at a whim and there are false exits (windows) all over the place.