Powerstone 12 Pack Pumice Stone Toilet Bowl Cleaner - High Density, Sturdy, Fine Grit - A Solution for Hard Water Stains on Toilets, Grills, Tiles, Grout & Pools

Not only is this a kinder, gentler pumice stone than the gray ones I used to buy, but it works better and is easier to use. We started using the gray colored pumice from another supplier on our new toilets to hopefully keep them cleaned--did the job, but they were harsh and also removed porcelain. These are just so much better. Not only that, but we live in remote Alaska and use a propane stove. Very hard to clean without taking it apart. I put off cleaning for years! Used these on my oven--wish I had taken before and after pics, because my oven is now spotless. And it was easy. Now I'm off to discover other items to use these on. I think I do go through them faster, but I just order more--it's worth every dime. Will update after I work on tile.

I've used pumice for years, but it was hard to find-- not any more! This takes off hard water rings, stains, & just the YUKKY stuff of toilets, y'know? Never a scratch to the surface, either. I LOVE PUMICE! These came in well-packaged (how well? you ask, not a chip off even one of them!) AND on time! I recommend this product from this provider. Yes! In the word of Nike-- JUST DO IT!

Great product, lasts longer than others that I have tried. My toilet looks absolutely lovely, shiny, bright, very nearly glowing with toilet joy to be finally rid of its embarrassing ring of icky discoloration from years of hard work. Like a day at the spa for the little guy, refreshing and invigorating. My toilet has not been this happy in years. I will buy this product again.

Impressed at the durability of the stone and how it holds up to strenuous cleaning. Use it on my job every day I do some cleaning work Use the stone on toilets and oven racks and it works fantastic

My bride gave me the task of trying to clean up the cooking grates for our gas stove. I had tried the normal pumice and it was working, but not that well. I saw these and decided to give it a try. What a difference. First off, I was using one block of the original pumice for each grate before and that did an okay job. I now used one block of this pumice for all four of the grates and it almost brought them back up to new. I figure that if I do this one more time, using one more block, they will look like new again. GREAT PRODUCT, I highly recommend it.

I made this purchased based on other great reviews expecting to receive strong pumice blocks. I was extremely disappointed. I went through 6 blocks in 30 minutes on my pool tile and the tile was not in bad shape.These perform no better than the blocks I get form my nearby Dollar Store and they are half the price. Would not recommend.

Bought these based on Amazon reviews in hopes they would help clean my toilets. Instead, they abraided the finish in my Toto toilets that was supposed to reduce staining, and the staining is much worse than before. I did give them two stars since they might be good for some other use, but my unused units will be donated to a rummage sale.

Breaks down too fast when cleaning calcium off the pool walls. It works ok.