Product review (5 stars): Was very happy. Start using it
Just want to share my personal experience. In October I bought a new ultrasound  humidifier with lighting.  Was very happy. Start using it, in a couple of weeks I begun having respiratory issues.  Pain in the lungs,  difficulty breathing. Every time humidifier was on symptoms resurfaced. Noticed that slimy mold was growing in humidifier. At the end I end up at the emergency room.  I think that story can explain how useful this product is.  It is not only keep humidifiers running longer and cleaner, Help to resolve hard water mineral mold and bacteria build-up.
Great deal! It saved my life,  love this product.  Buy one pack of 2 and you all set for the hole winter.
Received this product at a promotion price in exchange of the review.