Don't mask odors with fragrances -- treat them. Klima-Cleaner is an effective means for removing odors from the air conditioning unit by eliminating odor-causing bacteria, fungi and other germs. Works by effectively cleaning the evaporator -- the source of the problem. Apply as directed on the product label by applying through the air intake by way of the blower fan. Creates a healthy and fresh smelling environment that lasts for months. 250 ml aerosol *Ground Shipping Only. CAUTION: Recommended for professional application only. On certain vehicle makes, damage may occur if product is not applied properly. If uncertain about application, have a certified mechanic apply product.