T-Cell air freshener refill is part of an odor-control system that dispenses a consistent level of fragrance and Microtrans odor neutralizer. Through a Rubbermaid T-Cell dispenser, the pure odor neutralizer is distributed throughout the room to effectively eliminate a broad spectrum of odors. It is made of all natural ingredients that are safe and nonhazardous. Refill lasts approximately 60 days on the standard setting for a washroom with three to four stalls/fixtures. It can last approximately 90 days in a small washroom with one to two stalls/fixtures. Refill contains no propellants or added VOCs.