Pretty pricey but I Have only had these a few days and already see a difference. Amazing!
I wasn’t sure this would really work, so I only bought one to try. I wanted to compare a toilet with Krazy Klean Pro versus one without it. All I can say is I’m going to buy one for all our bathrooms!! We have well water and it lives a ring that can only be removed with a pumice stone. With Krazy Klean Pro, the ring is gone!
Works so far, waiting for it to add some yellowing to the bowl but so far so good
Have seen a slight difference. But we have very hard water down here.