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

I was very hesitant to purchase this product for fear of scratching the porcelain bowl . However, my test area revealed no damage and within seven minutes I had the entire ring gone. It came back within three months, but I can stay on top of it now.

Worked as great as the description and reviews suggested! I’d tried everything over the years to get rid of twenty years of water marks, including cleaners, limescale remover, scraping with various tools, etc. but nothing made much difference. These did the job, easily, and without much effort. One stick did all three toilets, so the six should last me for years (or a century if I’m willing to let them get as bad as they were before I clean them again).

I had to clean a toilet with 30 years of mineral build up around the water jets. They did not scratch the porcelain bowl as long as they are wet before you use them. Used a separate one on a gas stovetop. Same as before. Cleaned as expected with no scratches

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

Trabajo en limpieza y con eso elimino fácilmente el sarro en las poceta y las rayas negras sobre la cerámica de lavamanos o poceta, es efectiva

Use these to clean the waterline in my swimming pool and it works very well!

We recently moved into a house and the rarely used guest bathroom toilet had a calcified ring just above the water level. I tried 3 different toilet bowl cleaners. Nothing would remove it completely until this arrived. My niece, who worked a summer job for a cleaning company, told me about it. It is man-made pumice stone, not natural and not as hard as natural. Keep it wet while you scrub and it will not scratch the porcelain.

Works well on toilets that develop recurring ring around the collar from hard water deposits. It’ll take some elbow grease but better than most chemical alternatives!

Does a fantastic job. Removed all the hard water buildup for my toilets and I used a separate one for the sinks and it worked perfectly there as well

I keep these in both bathrooms in my house to get rid of hard water stains in my toilets. Great product and easy to use.