They really did work
I have tried all the limescale cleaners to clean my toilet bowl will limited success.  These stones really did the job. I did soak the bowl with vinegar and borax for a few hours after draining most of the water from the bowel.  Wearing some gloves I was able to remove the limescale with little effort or damage to my toilet. Cannot wait to try using them on my outdoor grill as I get it ready to be put up for the winter.
Rating: 5 stars