Why do they stay in the same spot and fly in circles?...Why not go around the room? Are they dumb or something
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They look for light. Wherever they find the light source, the will fly closer to the light source and flu in circular direction.
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Dear wat, I think Stalker has the best answer. I have heard that the best way to catch a fly is to shut off all the lights and turn on the TV because the fly will gravitate toward it.