Each refill lasts up to 60 days for a continuous fresh smell. Adjustable intensity settings allow you to strengthen the scent based on your own preferences. Refills adapt to all Air Wick? Freshmatic? Dispensers. Use in hotels/motels, health care facilities, nursing homes, office buildings, industrial facilities and restrooms. Twin Refill Pack. Scent: Fresh Waters?; Physical Form: Liquid; Application: Automatic Odor Control; Capacity (Volume): 5.89 oz.