This product has a unique clean air formula capable of eliminating indoor pollutants and odor-causing components. It eliminates odors caused by mold, mildew, bacteria, pets, smoke, musty odors, water damage, fire damage, paints, chemicals, animal decay, stale air, garbage areas, sewer gases, skunks, and more. Buy it and use it in A/C units, furnaces, rooftop units, fan coil units, and air handlers.