Protec Humidifier Tank Cleaning Fish, 200-600 sq ft, Color May Vary, PC1F

The Protec Humidifier Cleaning Fish features a patented antimicrobial, Aquastat, that helps keeps your humidifier cleaner, longer. It helps kills up to 99% of odor causing bacteria. Simply drop in your humidifier tank for fresh, clean mist! Cleaning fish can be used on all types of humidifiers. Cleans up to 30 days.