Bonide Revenge No Escape Window Fly Catcher attracts and traps indoor flying insects. For home, hospitals, restaurants, boats, RV's, farms and more. Superior, signature glue on one side, and non-residue double sided tape on the other, make this perfect for catching flies, mosquitoes, bees, asian lady beetles, or any home invading insects, even fruit flies and gnats! 4 Pack Attracts and traps indoor flying insects Catches flies, mosquitoes, asian lady beetles, or any other home invading insects For home, hospitals, restaurants, boats, RV's, farms and more Also catches fruit flies and gnats Insects are captured as they try to escape toward windows Attaches directly to window.