Zevo fly trap, fruit fly trap, and gnat trap attracts pesky flying insects in your home using specially designed blue and UV light. Traps flying insects on a disposable adhesive backing that you never have to touch. Removable refill cartridges available for year round protection. Plug trap into a wall outlet near common insect hangouts. The blue light indicates it's working. If not enough insects are captured, try changing the location. Replace cartridge when it is full of insects. For best results, check every 15 days and replace trap cartridge as needed. Effortless 24/7 continuous attraction works day and night to help protect your family from pesky flying insects. Designed for any room or area of your home where flying insects gather including kitchens, bathrooms, garage, near plants, and living spaces. Includes 1 plug-in base + 1 refill cartridge.