Highly attractive formula lures flies into quick death. Two powerful attractants - muscalure and a flavoring flies can't resist - transform practically any area into a fly-free zone. Fast knockdown - starts killing flies in less than 60 seconds - twice as fast as other leading ingredients. Ideal for rotation - effective against flies resistant to organophosphates, carbamates and pyrethroids. Easy to apply. Spray on virtually any surface where flies tend to rest, that does not come into contact with animals (window sills, walls, posts, beams, ceilings). Treats places conventional granular baits can't reach. Dries virtually clear on most surfaces. One application controls for up to 6 weeks indoors and up to 2 weeks outdoors. Re-apply as needed, but not before 7 days. For use in and around agricultural livestock production facilities, such as cattle, sheep and goat facilities, feedlots, dairy barns, swine buildings, horse stables, poultry houses and dog kennels. Contains 10% imidacloprid and Bitrex bittering agent to help prevent accidental ingestion by children, animals and pets.