When used with The ReZonate™ dispenser, ReZonate™ refills produce very small and very light micro particles keeping the fragrance suspended for many hours. Formulation is VOC exempt and contains no propellants or HFCs. One ReZonate™ refill cartridge can replaced up to three high volume metered aerosol cans, or up to six passive fragrance refills. These refills offer superior fragrance for up to 90 days.