Ortho Home Defense Insect Killer for Indoor & Perimeter Refill, 1.33 gal. is an effective solution designed to protect your home from unwanted insects. This product works both indoors and around your home's perimeter, killing bugs on contact and creating a lasting barrier to keep ants, roaches, spiders, ticks, and other invading insects away for up to 12 months. It is formulated to be non-staining and odor-, making it a convenient choice for maintaining a pest- environment without compromising your home's cleanliness or comfort. Model Number: