The RESCUE! Non-Toxic Disposable Fly Trap is baited for hundreds of fly species which are most common in agricultural areas including house flies, false stable flies, blow flies, blue and green bottle flies, flesh flies, face flies and many others. The RESCUE! Fly Trap contains a fast-acting fly attractant that starts working as soon as you add water. Food and feed additives are combined with other dried ingredients to make the RESCUE! attractant. Lured by the scent, flies enter through the top cap and drown in the water. Once lured inside the trap, the flies cannot escape and drown in the water added to the bag. The RESCUE! Fly Trap is intended for use outdoors. It will help control the fly population outside before it ever becomes a nuisance inside. The RESCUE! Fly Trap can be used whenever hot, humid conditions or the presence of animals or garbage causes an outdoor fly problem.