Keep flies away from your outdoor activities with the Victor Poison-Free Reusable Fly Magnet Trap and Bait. This trap is simple to use and lasts all season. Just place the included bait in the bottom of the trap, add water to the fill line, mix the solution and allow it to age for approximately one day. Flies search for food in low areas with plenty of sunlight, so be sure to place the trap no higher than 24" above the ground and in a spot which receives plenty of sunlight. The bait is specially designed to attract several types of flies, enabling you to capture not just house flies but bottle and blow flies as well. Keep the trap effective with Victor Poison-Free Reusable Fly Magnet Trap Bait refills. Tell flies to buzz off with the Poison-Free Reusable Fly Magnet Trap and Bait.