Tired of putting up with the wet sticky residue of metered aerosols? Then put up the SSS ourFresh 2.0, a new wave of air care technology designed to keep your spaces smelling clean and fresh. Dry Fragrance Technology - Liquid-free, leaves no sticky residue Eco Friendly Refills - 100% recyclable and are VOC compliant Superior 30-Day Performance - Smart chip technology runs the fan intermittently, turning longer as the 30 days progress (the fan does NOT run continuously) Easy to Refill - Hang approximately 6 ft. high in the center of the space; no need for a ladder Never Run Out of Power - Each refill includes a C alkaline battery