A safe method of controlling mosquitoes, sandflies and other flying insects that bite or carry diseases without resorting to pesticides. Insects attracted to the UV black light are forced down into the collection tray by a powerful internal fan pushing into and through the water surface causing them to drown. The Bug Catcher works! The proof is in the plastic tray, which slides out for easy emptying. CLEAN GREEN AND HEALTHY -- No damaging gases or lures required. 100% chemical free. No pesticides, dangerous chemicals or high voltage zapping grids.