It works great on calcium build up / hard water stains
Works great against hard to get rid of calcium buildup in toilets due to hard water. Bottle will easily clean a toilet bowl several times over before it runs out.

Clean

Cleaned bath tub hard water stains extremely well-!!

Brodi BolBac

This stuff is great on rust and hard water stains. Wear a mask it's strong best I've used

Amazing

It works ! Will continue to buy i tried everything and no results. This stuff amazing . If there is a gallon size please let me know.

It works great on calcium build up / hard water stains

Works great against hard to get rid of calcium buildup in toilets due to hard water.



Bottle will easily clean a toilet bowl several times over before it runs out.