Product review (5 stars): This product surpasses my expectations
I read many customer comments and complaints about mineral dust deposits in humidifiers, and feedback about how to deal with the problem. I selected this product based on the feedback in these reviews. I must report that this product far exceeds my expectations. I have been running my humidifiers almost non stop for a month now, and using this Best Air water treatment as directed.  To date, there has been absolutely no mineral dust or deposit in my humidifiers.