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Joanne
Reviewed in the United States on July 12, 2025
We had a few very small rust spots on the bottom of our pool. The pool store suggested we use a pumice stone. Since they did not have any in stock, I ordere it from Amazon. Disappointed as it took off the pool surface leaving the rust stain. We wound up using muriatic acid and the stain lifted easily
Paul Robinson
Reviewed in the United States on June 26, 2025
Works great to scrape hard water off tiles
Rob Orolfo
Reviewed in the United States on December 15, 2024
I honestly thought I’d have to live w the rust stains at the bottom of our light colored pool forever. With some elbow grease and patience, the stains came right out!!
Chrissy
Reviewed in the United States on October 21, 2024
The deep end of my pool ended up with a metal looking stain when the salt I added didn’t dissolve completely. I saw that pumice stones can remove it and bought this product. I was skeptical at first because of the size and really thought it would just break. However, once I attached it to the pool pole and went back and forth on it for a little bit, you could see how durable it was and it ended up removing the ugly looking stain I had.I’m really glad I found this and I hope it helps someone else too.
Robert Rockower
Reviewed in the United States on October 14, 2024
An effective solution to remove some types of stains from appropriate surfaces without draining you pool or spa.
SLF
Reviewed in the United States on May 11, 2023
As a pumise stone, they accomplish the job, but they disintegrate pretty quickly. Haven’t found a long lasting pumise stone yet, but these are better than most.
SM
Reviewed in the United States on April 19, 2023
Worked for calcium buildup on pool tiles but did not work for pool stains
Lauren R.
Reviewed in the United States on November 7, 2021
These scratched the surface of the slate tile around my pool. Amazon offers a rubber one that doesn’t scratch.
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