Use TERRO Window Fly Traps to lure and trap the flying insects invading your home and business. These traps use special technology to attract these annoying insects without baiting. No more chasing flies with a fly swatter in hand -- let TERRO do the work for you! TERRO Window Fly Traps are easy to attach to a window. Just apply to the window and then peel away the backing to activate the trap. This trap will provide you with months of protection against flying insects. When you need to replace the trap, simply take it off the window and throw it away. This package includes 4 TERRO Window Fly Traps, so you can add them to several windows around your home or business.