AOS-A100 Air-O-Swiss EZCal Pro Decalcifying Liquid for Humidifiers

A descaling and cleaning liquid that is perfect for pre-season, mid-season, or post-season humidifier maintenance. The new formula not only cleans your humidifier, it is also environmentally friendly. With phosphate free, natural, biodegradable, and odorless ingredients used, this cleaning agent is gentle on your humidifier and the environment.