The RESCUE! TSF Non-Toxic TrapStik for Flies catches common house flies, cluster flies and fruit flies. It uses VisiLure technology to lure insects with appealing colors and a multi-dimensional pattern. Flies are attracted by the colors and patterns, then they get trapped on the sticky surface and eventually expire. Use anywhere around the house, or outdoors in a sheltered location protected from moisture. It’s best to hang it right where there’s a fly problem, such as around windows or in mud rooms and covered porches. RESCUE!’s goal is to design, manufacture and market the safest, most effective pest control solutions available. Our products are the result of exhaustive and ongoing research and development, decades of experience and a commitment to solutions that respect the environment without sacrificing results. Established in 1982, RESCUE! pest control products have never used poisons or toxicants to kill pest insects. (4 Pack)