Product review (5 stars): My daughter noticed the difference in taste right away! ...
My daughter noticed the difference in taste right away! This was after the 6-8 minutes of running the water through the dispenser per the instructions. This product was delivered in two days (Amazon Prime)!!!
Bought another one and noticed the difference in our coffee maker.  The coffee maker has a self detecting alarm that notifies us that the system needs to be cleaned.  The alarm was going off almost daily. After a good cleaning and replacing the refrigerator filter, the alarm didn't go off for a week before needing to clean the coffee maker.