Brian Reay Wrote in message:

We live in an area with especially hard water and had an issue with a
toilet overflow- fixed some time back. However, it left some stains on
the wall. I had hoped they would fade but they hadn't. Scrubbing and
power washing hasn't helped.

Does anyone have any suggestions, please?


Oxalic acid? Patio magic et al have it in or "deck restorer".

--
Jim K


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