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Black Spot Remover

Posted by Adam Snow on February 16, 2023 at 12:27pm

I was just wanting to know what brand of black spot remover people use. It seems so expensive and just wanted to make sure I get something effective and not harmful to surrounding plants and grass. have a job to do that is an old sandstone patio that is really badly covered in black spots. They also have a block paver drive that needs sorting. Many thanks for any comments or advice.

 

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Replies

  • Peter sellers February 16, 2023 at 5:45pm

    Adam, see my reply to Dylan under the heading Indian stone cleaner

  • Sean Clarke February 16, 2023 at 8:36pm

    Sodium hypochlorite is the go-to chemical for black spot. It's a bleach so it's not ideal to get on plants, but then again neither is acetic acid which is marketed as an "organic" cleaner.

    • Adam Snow > Sean Clarke February 19, 2023 at 7:26am

      Thank you guys, much appreciated advice! 

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