The Rescue Deck & Patio TrapStik for Flies catches nuisance flies and other flying insects. It uses unique VisiLure technology to attract insects with appealing colors and pattern. Flies are attracted to the trap and then get trapped on the sticky surface. This water-resistant trap is recommended for use outdoors in and around areas such as patios, porches, water features, gazebos, barns, stables, or dog runs. Water resistant and made in the USA. Avoid hanging the TrapStik in areas where birds or other wildlife frequent, or where children or pets could contact the adhesive.