FUEL CELL TECHNOLOGY: Hydrogen released into the refill chamber forces fragrance into the air at a consistent rate and distributes throughout room with natural air flow | COST IN USE: Cost-effective refills deliver up to 3 months of odor control that’s superior to competitive air freshener systems | SUSTAINABILITY: Battery-free fuel-cell technology contains no propellants | CONTINOUS DISPENSING: Provides high-quality Citrus fragrance, and odor neutralizer providing a consistent a pleasant smell and a feeling of cleanliness | ADJUSTABLE DISPENSER SETTINGS: Standard Setting - 60 days for a standard a size restroom: 3 to 4 stalls/fixtures | ADJUSTABLE DISPENSER SETTINGS: Light Setting - 90 days for a smaller size restroom: 1 to 2 stalls/fixtures