Terro Fly Magnet Fly Traps use a sticky tape to attract and trap flies and other flying insects. Fly Magnets come in the form of cardboard tubes which, when twisted, expose a sticky surface to trap flies. Each tube includes a hanging ribbon and thumbtack for easy installation in barns, on campsites, on porches, in kennels and in vacation homes. This fly paper requires no bait, has no foul odor and does not create a mess. When the trap is full, throw it in a bag and put it in the trash. Each package contains four Terro Fly Magnet traps.