This does a great job of preventing the mineral deposit ring in our toilets. We have not had to scrub a ring with a pumice stone since using Krazy Klean. Highly recommend.
Have toilets that would get a black ring in each toilet where the water sits. It would spread through out he bowl with in a few weeks. Had to manually clean with a brush and chemical at least every three to four weeks. I cleaned each toilet. Put in the Krazy Klean. It has been a month so far. My toilets each look nice and white so far. I’m impressed at this point. It seems to be helping do the trick so my toilets do not look like a growth as happening in each. Now if keeps doing this for the ten years as claimed. Either way, if it helps so far he toilet doesn’t need to be scrubbed at such a fast frequency “I’m a Fan and recommend”.
I’ve had them for 6 months and haven’t had to clean my toilet at all. I bought them for my daughter and she has really hard water so they don’t really cut through that.
I am super happy with my purchase. I bought 4 for each toilet in my home and so far the red stains I struggled with for years have disappeared. I will never have a toilet without a Krazy Klein again.