We&#39;re confident flies, gnats, and fruit flies won&#39;t be able to resist the allure of the blue and UV light, shining brightly from your Trap, Kelli, given a little bit of adjustments. Our Quality Team assures us that all Traps effectively rid your space from these winged pests, especially if the unit isn&#39;t blocked by anything and it&#39;s the brightest light in the area. Reduce other light and take care that the outlet you&#39;re using is right out in the middle of the action. We&#39;re here to help, and are confident we can, so call us any Monday through Friday, from 9 AM to 6 PM, EST. Our number is 1 (800) 374-9429.<br />