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How do I permanently get rid of this discolouration in my bathtub? (I have hard water)
(sh.itjust.works)
I've tried scrubbing it several times with bar keepers friend soft cleanser and although it improves, it never goes away completely and it always comes back.
A common way to wash many dishes is a tub of soapy water to clean off food, a tub of diluted bleach water to disinfect, and a tub of water to rinse the dishes. It's used by wilderness guides around the world.