Feel better knowing that your family is breathing cleaner air. This Holmes Allergen Remover is up to 99.97% efficient in removing allergens such as pollen, dust, mold, pet dander and smoke from the air passing through the filter. The carbon odor filter, which has been treated with baking soda, is designed to trap larger particles as well as absorb and eliminate odors that may come from pets, garbage, bathrooms, litter boxes, smoke and cooking. Clean, filtered air is distributed into the room with a fan to improve air circulation. A low-vibration motor and advanced fan blade system effectively remove airborne pollutants from the air without noise distraction.