UV dye in glue attracts houseflies, cluster flies, garbage flies, blowflies, and more Non-toxic and pesticide-free safe to use around children, pets, and food Window sticker removes easily without leaving residue Replace every 3 months or sooner when full Includes 4 indoor fly traps Made in the USA Control flies in your home without toxic chemicals or sprays using BioCare Window Fly Traps for Indoor Houseflies (Model S534). These sticky traps attract all types of flies, including houseflies, cluster flies, garbage flies, blowflies, flesh flies, and blue bottle flies. To use, peel the backing from the mounting strip and to stick the trap along the edge of a window where it will not contact curtains, blinds, or cords. You can also place the clear sticker on tile, metal, or wooden surfaces. Then peel the front release paper to expose the glue. Flies will be attracted to the UV blue dye in the glue as well as to the blue shamrock pattern on the sticker, which mimics fly silhouettes and helps conceal trapped flies. These non-toxic sticky fly catchers contain no pesticides and are safe to use around kids, pets, and food. Long-term use of the traps will reduce the number of flies over time. Replace each window fly trap every three months or sooner if full. The transparent indoor traps will remove easily without leaving behind any residue.