Tengard SFR is a Permethrin based product that acts as an insecticidal barrier against a broad range of insects such as ants, bees, fleas, aphids, beetles, ticks, and roaches. Also used to control and prevent subterranean termite infestations in and around structures. For effective control, the insecticide emulsion must be adequately dispersed in the soil to establish a barrier between the structure and the termites in the soil.