Zenprox Aerosol Zoecon Bug Spray Aerosols Pyrethrins 0.15% Tetramethrin 0.50% Etofenprox 1.00% Piperonyl Butoxide, Technical 1.50% How Zenprox Aerosol Works Zenprox Aerosol has four active ingredients that work together for For use in Homes, Apartments, Schools, Medical facilities, Offices, Industrial, Storage facilities, Buses, Trains, And any non-food/non-feed handling establishment. Bed bugs, ants, carpet beetles, cockroaches, crickets, earwigs, firebrats, fleas, flour beetles,