Demon WP Insecticide 4 x 9.5 Grams Packets in Water-Soluble Packets Makes 4 Gallons Cypermethrin 40% Cypermethrin 40% For use as a general surface, crack-and-crevice and/or spot treatment for residual and contact pest control in, on, and around buildings and structures and their immediate surroundings and on modes of transport. Permitted areas of use in nonfood/nonfeed areas include, but are not limited to, aircraft (cargo and non-cabin areas only), apartment buildings, boiler rooms, buses, closets, correctional facilities, decks, entries, factories, fencing, floor drains (that lead to sewers), food granaries, Each foil envelope of Demon WP in Water-Soluble Packets contains water-soluble packets of Demon wettable powder. The foil envelope must be opened for use. Because water-soluble packets readily dissolve in the presence of moisture, do not allow them to get wet before adding to the applicator tank.&nbsp;