Been in use for 3 weeks. Seems to be working. Has eliminated well over 95% or more of bowl ring. As with anything used, bowl will need a cleaning occasionally. But not like before. I like this product so far.
We bought a house that has really bad old plumbing and is on a well and every 3 days we would have to not only clean the toilet because it looked like it hadn't been cleaned in a year, but it would need to be SCRUBBED! Elbow grease scrubbed! While I knew that this product didn't mean not having to clean our toilets ever again, I did have low expectations of how beneficial it really was going to be for us. You can tell makes a big difference in just one day and we are very happy with our purchase. Hoping that it lasts as long as you say it will! :)
It keeps my toilets clean but I still have hard water stains