221L Insecticide Residual Aerosol

How 221L Insecticide Works 221L insecticide residual aerosol contains the synthetic active ingredient pyrethroid called lambda-cyhalothrin. Like other pyrethroids, this active ingredient targets the central nervous system of pest insects. It causes hyperexcitation and prevents the pests from grooming, feeding and performing other functions. Before long, the pests become paralyzed and die. Unlike other pyrethroids, lambda-cyhalothrin provides a residual effect and continues to control the pests after the ingredient has dried on the surface. Where to Use 221L Insecticide Use 221L Insecticide aerosol spray indoors and outdoors to eliminate and to control pest infestations. Because it's in spray form, it can be applied as a spot treatment or as a crack-and-crevice treatment to kill insects on the spot or deep in their hiding places. Apply it inside and outside of apartment buildings, homes and offices, including other common areas such as: Food-processing facilities Hotels Nursing homes