Deep penetrating spray that remains active for up to 3 months. Mite Killer Spray is an easy to use aerosol insecticide with rapid knockdown specifically formulated to kill common mites (red, delumping & northern mites) but once applied to outbuildings, poultry houses, arks, coops etc all migrating mites will also be accounted for. Its powerful insecticide action coupled with a long-lasting residual action penetrates deep into crevices where mites like to hide & will remain active for up to 3 months. Can be used against fleas & other flying & crawling insects on hard, porous & non-porous surfaces.