Zero In Ant and Crawling Insect Killer is a powerful aerosol spray that destroys ants, cockroaches, silverfish, and other crawling pests instantly on contact. Formulated with a blend of Permethrin, Tetramethrin, and PBO, this insecticide stops active bugs in their tracks and leaves behind a protective residual shield to prevent repeat infestations. It kills ants and crawling insects on contact and provides residual action against repeat infestations.