Spectracide Bug Stop Home Barrier ready-to-use formula kills on contact to provide indoor and outdoor insect control. Plus, it offers up to 12 months of control for cockroaches on non-porous surfaces. This water-based, clear formula leaves no odor or oily residue. Convenient and easy to use, the Spectracide Bug Stop Home Barrier formula kills insects indoors where they hide and outdoors as a foundation treatment or where insects may enter.