Aquastick Humidifier Treatment 2-Pack

Keep all of your humidifiers running cleanly and safely. The Aquastick Humidifier Treatment is an easy, chemical-free and non-toxic way to keep your tank clean. Simply add one to the tank to reduce the growth of mold and odor-causing bacteria in the water. Each Aquastick lasts approximately 3 months. Works in all humidifiers, including ultrasonic and evaporative humidifiers. Includes two Aquasticks.