Ortho 16 oz. Concentrate Home Defense Termite/Destructive Bug Killer. This trenching treatment keeps termites away for up to 5 years in treated areas. It effectively kills wood-destroying pests and other listed home-invading insects, including subterranean termites, carpenter ants, carpenter bees, and other listed wood-destroying pests. Use it around your home's foundation, wooden structures, wood piles, tree stumps, and stored lumber. May be used in trenching treatments for up to 5-year control in treated areas (trenching N/A in MA, NY, & RI).