>>5734240Here is how to make agreat fly trap:
Get a 2 liter bottle. Cut off the top 1/5 of it (the conelike top), and turn it upside down so it looks like a funnel leading to the rest of the bottle. Tape it firmly in place, so the only opening is where the cap was. Put a piece of meat or fruit down the funnel. Set by your trashcan or where there are a lot of flies. They can't get out once they get in, since they will try flying up, but the funnel exit is much lower than where the walls meet the funnel's edge. I've killed hundreds of flies with these traps.