Powerful enough to freshen even your largest spaces， this unique air freshener uses the cover of the dispenser as the air freshener refill itself. Motor-driven fan moves the fragrance further than a typical passive system to effectively freshen larger areas. The smart system behind this dispenser releases approximately the same amount of air freshener daily over 30 days by turning the fan sparingly in week 1， and gradually turning it more frequently until week 4 when the fan runs constantly. Plus， a light sensor detects when the room is not in use to conserve its battery life. Use the convenient blinking LED to see exactly when maintenance is required. Air freshener is designed for use with a Fresh Products fragranced cover (sold separately).