Product review (5 stars): Improves quality of Cool Mist Humidifier
We recently purchased a stuffy farmhouse and when the windows are closed, the air is not the best quality.  We run our Crane Cool Mist Humidifiers constantly when the heat or a/c are on.  Using this product as directed, we do see a marked improvement in the quality and cleanliness in our cool mist humidifiers.  We may not empty and dry them as often as we should and have found no mildew or odor in the machines while using this product.

I also bought this for my parents to use in their Crane.  Dad has a chronic lung disorder and we feel that using this product in their cool mister is added insurance that Dad is not breathing in additional harmful bacterias that may grow in the machine.