It’s hard to believe. I had them over a month now and no ring. Hardly a need to scrub.
It really works . I got one for my main bath and have had it a year and I love it so I bought one for my second bath. It lasts 10 years so the price is worth it because you would spend more money on products to clean your stool and they are not good for you. No brushing or hard work with Krazy klean.
Can’t give it 5 stars yet, as I haven’t had them in my toilets for too long. So far I am not noticing the usual build up I get in my toilets from our well water. If it continues to work for years, as they claim, I will give it 5 stars then!
I put them in three toilets about 2 weeks ago. So far, our bad toilet is slowly looking a little better and the others have remained clean.