Prozap ld-44z, 25 oz, premium insect fogger, for quick knock down & residual crawling & flying insect control, contains .5% pyrethrin & 4% pbo synergist, controls flies, mosquitoes, gnats, lady asian beetles, roaches, & spiders along with 19 other insects, for use in barns, stables, milk rooms, kennels & other facilities, premium propellant & no need to shake can.