Product review (5 stars): Good prodct, and rextends life of wicks
This works well to extend the useful life of the humidifier wicks in my two humidifiers.  Before I started using this the wicks would begin to smell, and discolor.  This product doesn't prevent that from occurring but delays it from happening.  By spending some money on this it delays speding money on the wicks and is what I have been doing for over three years.  Best of all Amazon has had this in stock each time I've ordered it unlike some of the local stores.