Demon WP Insecticide is an advanced formulation taking advantage of Cypermethrin. Demon WP Insecticide is an advanced-generation Pyrethriod provides excellent control at extremely low concentrations. Demon WP Insecticide is an odorless wettable powder in water soluble packets (2 packets/bag). Demon WP takes command of roaches & other major insects inside the home. Quick knock-down & fast flushing while providing excellent residual control.