This medically proven spray neutralizes allergens on contact for up to three months. The active ingredient in this spray is tannic acid which has been medically proven to denature mite and cat allergen protein rendering it permanently non-allergenic. ADS„ will also neutralize allergens from plant and grass pollens, mold and mildew. For optimum treatment benefits use ADS„ in conjunction with Allersearch X-Mite. Treatment Application: Spray a fine mist of ADS„ to dry surface in a sufficient quantity to dampen the external surface fibers of item being treated. Allow treated surface to dry for approximately three hours. Once surface is dry, vacuum to pick up any excess residue. Re-treat surfaces every 90 days for optimum treatment benefit. Not recommended for water sensitive fabrics such as silk or white materials.