INTERNATIONAL USA/32-1 Muriatic Replacement Acid, 1-Quart

Phenomenal product. I diluted it to slightly more concentrated than the manufacturer recommended, but when I used to clean the grout lines on my kitchen floor, it cleaned them up quickly and without a lot of scrubbing. I used a rubbermaid commercial tile and grout brush (also purchased on Amazon) and dipping the brush in the solution and brushing a couple of times cleaned the grout up quickly. I had tried everything to restore the tan grout, and the grout was still black. With this product the grout looked like new. I was able to do my entire kitchen in a couple of hours.

I purchased this to use to clean the salt cell for my swimming pool, and it worked perfectly. I used this outdoors and did not notice any fumes at all. I used a glass measuring cup to mix this acid with water, and it cleaned the salt cell completely in about 5 minutes. Will definitely purchase again.

Works very well on toilet ring stains and on porcelain or tile.

This stuff did what was expected. Lifted the dirt right out of the grout lines in tile floor. Used an old toothbrush to gently scrub but be aware, this stuff is acid so after a few minutes of use the toothbrush started to fall apart. Work carefully and get a minimal amount on your skin. This stuff is strong.

I couldn't believe what this product did especially on grout using a toothbrush. On toilet rings I used a combination of wet sandpaper and the acid straight. All I can say is wow. When I run out I am definitely buying this product again. My friends are trying to steal what little I have left to use on their problem areas.

Do the job , my toilet and sink shower it's so shinny

Just as advertised. Works great!!

REALLY works!!!