Refresh your home with the Westin White Tea Scent System. Simply insert a scent cartridge, plug in, and enjoy. With its compact design you can conveniently mount it to a wall, place it on a table, or tuck it in a corner. It effectively freshens 500-1,500 square feet of your home and each scent cartridge lasts approximately 300 hours. The ScentWave scent delivery system uses a dry-air technology that releases fragrance without sprays, aerosols or messy oils. Adjustable duration and intensity settings and built-in 24 hour timer make it easy to customize the scent for any environment.