Refill contains Metazene brand molecular odor neutralizer. Fragrance liquid flows from inner core through specially-bonded wick. No dripping, spilling or leaking. No propellants. Every commercial enterprise should incorporate some form of ambient scenting as part of its marketing strategy to increase traffic and customer satisfaction. Statistics and studies indicate that a pleasantly scented commercial space leads to customers lingering longer and they are more likely to return to the establishment. Let AirWorks 3.0 Passive Air Care Dispensing system create a pleasant smelling and clean indoor atmosphere for your business.