The Fruit Fly Trap is specifically designed for the removal of fruit flies. Each fruit fly trap lasts up to 30 days or until full, whichever comes first. By utilizing a special food-based attractant that easily targets fruit flies once water is added, the fruit fly is designed to allow fruit flies to reach the attractant but not to escape. The attractant is safe to use around food preparation areas and fresh produce. The food lure is water soluble so just add 2 tablespoons of water for 30-days of protection.