We have had a hot tub for about 6 months. My daughter is alergic to high levels of chorline and Silk Balance provides a great alternative that enables us to have a hot tub. Our entire family of five loves the soft and smooth feel of the water and the elimination of chemical odors. Maintaining perfect water is a snap with Silk Balance and I do not need to have a cabinet full of chemical supplies. I would recommend this product to anyone who wants to truly enjoy their hot tub instead of manage it.