Zevo 2 Flying Insect Traps & 4 Cartridges - Plug In Fly Trap & Indoor Bug Catcher for Gnats, House & Fruit Flies - Mess-Free - Use in Any Room - Uses Blue & UV Light (2 Plug In Devices & 4 Cartridges)Catch Flying Insects 24 7 This flying insect trap uses blue and UV light to attract and catch house flies, fruit flies and gnats. Its continuous attraction helps it catch insects day and night. Mess Free Disposal This indoor fly trap and gnat catcher uses a powerful adhesive backing you will never have to touch. The adhesive pad can discreetly catch bugs, and discreetly faces the wall. Easy to Use To use, remove the sheet from its adhesive backing,