ADS Anti-Allergen Dust Spray 16 oz. by Allersearch. $18.95. 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®. T…