Evaporative cool mist humidifiers cannot be run without the use of a wick filter.
The harder the water, the shorter the filter life. This is because minerals will get trapped in the filter over time and cause the filter to lose its ability to wick.
Wick filters help remove the impurities found in general tap water. These impurities cause the filter to change color as they get trapped in the wick. As more and more minerals become trapped more of the filter will change color. Eventually the filter will no longer be operating the humidifier effectively, which means it is time to change the filter.
Arm & Hammer Baking Soda naturally deodorizes the air by absorbing and eliminating odors that come from garbage, bathrooms, pets, litter boxes, and cooking.
Microban protection is an Antimicrobial agent that is used to treat the wick filter and the base of the humidifier. Microban product protection helps inhibit the growth of odor-causing bacteria, mold and mildew.