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! 

Features: 

• Reduces up to 99% of odor causing bacteria, unsightly mold and algae growth versus untreated humidifier surfaces
• Offers continuous protection against slimy buildup in the humidifier
• Keeps cleaning for 30 days
• Works in most humidifiers
• Contains no harmful chemicals