Powerstone Pumice Stone Toilet Bowl Cleaner with Handle (1-pack) - A Reliable and Harmless Solution for Cleaning Limescale Deposits, Mildew & Hard Water Stains on Toilets, Grills, Tiles, Grout & Pools

I have been struggling for a few years to remove the calcification which had stubbornly attached itself to my toilet bowls as a result of well water. I tried CLR, bleach, steel wool, etc. Nothing worked! I finally found this pumice stone. I had no other resort. What a revelation! I had to use a little elbow grease, but the results were amazing! No rings! Make sure you keep the pumice stone wet though. Additionally, ensure the toilet doesnt contain any water. That bit is in the instructions. Enjoy your ring-free toilet bowl!

It really works!

I’ve tried EVERYTHING on this nasty toilet… came across this and figured I’d just return it if it didn’t work… no need. Worked easily (took me about 15 min to scrub), did have to use some elbow grease but worth it for a CLEAN toilet!! And I barely used any of the stone so I have it in case build up happens again.

I dont usually submit reviews, but this product deserves one! Its hard to hold/use, but it worked miracles on the brownish red hard water stains on my toilet. Sent one to my dad and it worked perfectly to remove rust stains from his toilet. Awesome product!

I have tried so many products to get the hard water stains off of my toilet and sink and nothing worked. I was skeptical when I bought this, but it actually worked and took the stains right off!

Totally cleaned up the toilet bowls! As crazy as it sounds I was bummed about the toilet ring I could NOT get rid of; this product totally did the job and my world is calm once again. A little hard work, some elbow grease and your rings and hard water marks are gone. Well worth the money !

My wife has tried a multitude of things to eradicate the ring our water supply leaves in the toilet bowl. This is the first product that actually works!!! Highly recommend it!!!

Excellent product ! Easy to use and works well

Made it look brand new.

This does clean hard water and rust very well. I cannot speak to whether it is damaging my porcelain surface though. I think of it like an exfoliant with its little micro scrubbing grit.