Reusable fly trap catches hundreds of species of common nuisance or filth flies. The trap is baited for the most prevalent species including house flies, false stable flies, blow flies, blue and green bottle flies, flesh flies, face flies and many others. The trap comes with a water-soluble pouch of powder attractant. Once lured inside, the flies drown in the water added to the trap. Refills are available as blister cards containing three applications of the fly trap attractant.