We live in an area with extremely hard water and a crust would form in the toilet bowl a day after cleaning. Since implementing this product by bowl is white and clean all the time. I love it
I just dropped it in, and my bowl remains clean. I do suggest cleaning it first so that it stays looking clean. My toilet has never stayed this clean, this long, without my having to clean it. If this lasts 10 years, It is easily worth every penny.
It is staying clean, really enjoy not scrubbing the toilet.
So far it’s working great. So happy with my clean toilet. Ask me again in 9 years