Commercial Ultraviolet Fly Zappers These traps zap or electrocute insects that are attracted by the ultraviolet lights. With this bout of pesky bugs I immediately made a Fruit Fly Trap, and within a few hours they were all gone. Switch on the flashlight and place it into the can.

All Rights Reserved. Flies are naturally attracted to the smell of garbage in your garbage can.

Then from the outside of the bag, cut around the inner edge of the disc, just enough to expose the holes and tape the edges down. You can similarly make it yourself by taking wood ash or lye natural sources of NaOH and mixing it with an animal fat like butter, or even beeswax and plant based oils.