Releases a fresh scent as you vacuum, to help manage pet odors. Properly maintained filters help to reduce reintroduction of dust, pollen and other allergens into the air. Can be gently rinsed under warm (not hot) water and replaced when the scent is gone or at least 1 time every six months to keep the filter functioning properly. Clean or new filters can extend product’s performance and life. Pre-Motor Filter helps prevent large debris from reaching the motor.