Ourfresh is the modern solution to metered aerosol. Dry fragrance technology leaves no sticky residue. Innovative smart program ensures an equal fragrance release over 30-days. The light sensor conserves battery life working only when the room is in use. Odor neutralizing additive cleans the air.Dry fragrance technology, liquid-free, no sticky residueEco friendly refills, 100% recyclableSuperior 30-day performanceEasy to refill, hang approximately 6 ft. H