Change Pads TWICE a year.
(1) 4-Pack of Pads lasts one year.
Humidifier Pads wick water over the Humidifier heater bar. The Pads can be changed by the piano technician or the piano owner.
This 16 oz. bottle of PAD Treatment will last about TWO years.
PAD Treatment inhibits algae growth in the Humidifier tank and watering tube.
Add one capful each time you add water to the Humidifier.