ClenAir MiniFresh is not a perfume mask or cover-up. The unique ClenAir formula molecularly reacts with the airborne odor-causing compounds and eliminates them and other indoor pollutants leaving clean, fresh, air behind. The patented MiniFresh makes it easy to remove odors and improve the indoor air quality in the entire home or building by treating the air through the HVAC system. 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! Use in mini split, PTAC, or other ductless systems. The MiniFresh can be installed on the return louvers of indoor units. It will be out of view and will work quietly to eliminate odors. MiniFresh mini split odor eliminator treats up to one 12,000 BTU indoor unit for 3 months.