3-in-1 Air Purifier with Pet Pure True HEPA FilterBrand: Guardian Technologies Color: Multi Features: True HEPA + Pet Pure Treatment: True HEPA captures 99. 97% of allergens including pet dander, dust mites and pollen. The Pet Pure is an antimicrobial agent added to the filter to inhibit the growth of mold, mildew and odor causing bacteria on the surface of the filter. Air Purifiers with Charcoal filters reduce common odors from pets, smoking and cooking. Make sure that the HEPA Filter is firmly in