Spectracide Bug Stop Home Barrier kills on contact to provide indoor plus outdoor insect control. This non-staining no-odor spray gives up to 12 months of control for cockroaches on non-porous surfaces and also kills ants spiders fleas ticks crickets earwigs silverfish stink bugs and other listed insects. The water-based clear formula leaves no odor or oily residue. Use it indoors or as an outdoor foundation treatment. Spray inside the home in cracks and crevices along baseboards under sinks behind stoves and refrigerators and anywhere insects may hide. Use outside on outer surfaces of screens door and window frames porches patios buildings or wherever insects may enter.