Billy Bob 5 Gallon Bucket Fly Lid gives you the ability to turn any 5-gallon bucket into an effective fly trap. This innovative lid a safe to poison, sticky adhesives, and other harmful bait traps. Simply bait a bucket with the attractant of your choice, and once the flies catch the scent, they will fly down the funnels but won’t be able to escape. It’s for controlling large fly problems, capable of catching hundreds or even thousands of flies in a single bucket. I for use in barns, patios, garages, campsites, greenhouses, and many other locations. When it’s time to empty the bucket, just remove the lid and dump it out, then reuse the lid to keep catching flies.