Our trap catches fruit flies that congregate and breed near fruit, vegetables and food scraps. This trap uses a food-based lure and color proven attractive to fruit flies. Simply add the liquid attractant to the trap and it starts catching fruit flies within minutes. Each trap comes with a 30-day supply of attractant and is reusable with rescue fruit fly trap attractant refills. With more holes and a higher concentration of attractant, our exclusive design is proven to catch adult fruit flies 8X better than competitive traps.