Ortho Home Defense Insect Killer for Indoor & Perimeter Refill2 kills the toughest home-invading insects, including ants, cockroaches, spiders, fleas, ticks, scorpions, earwigs, silverfish and periodical cicadas (as listed)This insect killer spray provides a long-lasting bug barrier of up to 12 month protection against ants, roaches and spiders indoors on non-porous surfacesUse this pest control spray indoors in kitchens and bathrooms or around doors and windows, and outdoors to the perimeter of foundations, patios, decks, garages or wherever insects are a recurring problemApply this bug killer anytime as a preventative treatment or after you see evidence of insect activityThis 1 gal. Ortho Home Defense Insect Killer for Indoor & Perimeter Refill2 allows you to reuse your Comfort Wand from its original container