Review on CLR CL 4Pro Calcium Remover Gallon by India Stack

My house was renovated a few years ago. I have river stones on the shower floor. Terrible limescale deposits form on it, which are almost impossible to remove. I had professional painters and my contractor tried to remove it to no avail. I decided to check out the CLR and try it myself. I can't believe what a great job he did! I dumped it on the floor and let it sit for 15 minutes, then scrubbed it with a brush. The calcium was so bad that I had to do this several times over the course of 2 days. I am very happy to report that the floor looks almost new. Now that I've found a product that works, I can maintain this floor myself on a regular basis. For the record, the River Stone looks great, but it's too high-maintenance, so I wouldn't recommend it. I uploaded some before and after photos. The last 4 are the previous ones.