Pleasantly scented aerosol effectively controls odors, while keeping your indoor air smelling fresh. Each refill operates for up to 168 days, depending on your metered dispenser's interval settings. Easy-to-replace; designed for the TC? Standard Aerosol System (sold separately). Scent: Purifying Spa; Physical Form: Liquid; Application: Automatic Odor Control; Capacity (Volume): 5.25 oz.