Eco-Air Refill Outperforms Gels, Wicks And Aerosols Using A Unique, Mango Fragrance Designed For Consistent, Powerful, 30-Day Performance. Eco-Air Is Freshness Made Simple. Solid Refill Is Infused With Natural Fragrance Oils So The Air You Breathe Is Chemical-Free - No Messy Gels Or Liquids. Eco-Air Works Great In Conference Rooms, Entryways, Restrooms And Trash Rooms. Simply Mount The Dispenser (Not Included) On The Wall Near A Door So The Natural Airflow Spreads The Fragrance Throughout The Space. Use In Fresh Products Eco-Air Dispensers (Not Included).