Harris Bedbug Killer, 1 Gallon is a powerful and long-lasting solution designed to eliminate bedbugs and lice on contact. This water-based formula is non-staining and odorless, making it safe and convenient for use on a wide variety of surfaces including mattresses, box springs, drapes, clothes, walls, floors, and carpets. Its active ingredient, Deltamethrin, works effectively to kill pests immediately upon application. Once the spray dries, it leaves no visible residue while continuing to protect your space by killing bedbugs that return to the treated area. The product comes ready to use in a 1-gallon container equipped with a trigger spray for easy application.