Lenicany 6Pack Pumice Stone for Toilet Cleaning Bowl Stick,Powerfully Cleans Hard Water Rings，Calcium Buildup & Stains, Suitable for Cleaning Toilet, Bathtubs, Kitchen Sink, Grill

Im not sure if there are micro scratches to the bowl, but it was able to make it look new and Ive tried for over a year with various liquid cleaning products without much success. This took about 5 minutes to clean the whole bowl. Im very impressed it was so easy and 3 toilets and more than half a stick left.

These are fantastic for cleaning toilet bowls! They easily and quickly remove hard water deposits and the black stuff that a plastic bristle brush and cleanser will not. No nasty chemicals go into the water system. They are consumed during use. I would say they are good for 3 uses on moderately funky toilets.

Bastante eficientes para eliminar el óxido y manchas de los baños. Se gastan rápido.

Probably wouldnt order again

A few minutes and all rust stains completely gone. No scrubbing or no chemicals. Super easy.

The pumice stone, God, all the iron, stains or whatever it was, that staining my toilet, and it did not scratch the porcelain

These make my toilet and sink look like new!!! A must stock up, specially if you have hard water in your area!

I almost never leave product reviews but these are AMAZING for hard water stains on toilets. I used less than one stone and cleaned DECADES of hard water off of two toilets in about 30 minutes. I cannot believe nobody has told me about this sooner or that I am posting photos but this is how much I am obsessed with the results. Buy these!!

Good price and works well

It’s pumice stone. About the same as any other pumice stone. Nothing to really add…does the job needed!