Exclusive fly attractant formula contains feeding stimulants and attractant flies can't resist. Catches filth breeding flies such as house flies, blow flies, flesh flies, blue and green bottle flies, dump flies and dung flies. Insecticide-free. Pouches dissolve and activate in water. Specifically formulated for use with Starbar fly traps including Fly Terminator, Milk Jugg Fly Trap, Captivator Fly Trap and other 1/2 gallon/gallon sized reusable fly traps. Bag contains (8) 30 gram pouches.