The Fruit Fly Patrol uses special UV light and attractants in the trapping surface to capture fruit flies. It’s small size blends into any dcor, and features a 30-day auto-advance cartridge. HIGHLY EFFECTIVE and both USDA and FDA approved. Use this cost-effective system to avoid the constant annoying fruit fly problem for bars, restaurants, wineries, C-stores and other areas with damp or sugary/sweets may be.