The Filtrete Allergen Defense Odor Reduction filter attracts and captures microscopic allergens like dust, smoke, and smog particles and large allergens like mold spores and pet dander. For residential use only.Cleaner air can be yours -- even with common household odor culprits living under the same roof. Filtrete Odor Reduction Air Filters feature a unique active carbon layer to help minimize strong odors while trapping dust and allergens. Go ahead and let life happen: The freshness of your indoor air is in good hands.