The RESCUE! Outdoor POP! Fly Trap lures and traps flies in a large-capacity, reusable container. Flies are drawn into the trap where they cannot escape by our unmatched lure that flies find irresistible. This durable trap can fit up to 40, 000 flies (yes, we counted) and can be reused again and again with available refills. Simply drop the water-soluble pouch into the trap, add water, and place or hang it outside where you see flies. Place at least 20 feet from where people gather to keep flies from bugging you. That's Smarter Pest Control. | RESCUE! POP! Fly Trap