Treat newly planted trees and shrubs for maximum protection

Contains more of the active ingredient than other gels

Contains a slow-acting chemical for thorough roach control

commercial landscaping and recreational sites such as parks and golf courses

Designed to sit flush against a wall to catch mice

221L Insecticide Residual Aerosol Carpenter Bees Treat newly planted trees andHow 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