Victor M380 Fly Magnet 1-Quart Reusable Trap With Bait (3 Pack) Includes patented non-poisonous, most effective bait on the market. Bait will attract a broad range of species, including house and blowflies. White color and diamond-shaped lid on trap designed to attract more flies. Safe around children, pets and the environment. Traps are re-usable. Once filled with flies, dump contents, re-bait, add water and do it again. Baited system will last a long time. Effectiveness is not diminished with time.