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Patio Black Spot Remover

Discussion in 'General Gardening Discussion' started by BenCotto, Apr 1, 2024.

  1. BenCotto

    BenCotto Gardener

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    They must have pondered for a good five seconds before coming up with this product name! Has anyone used it? Online reviews are impressive but at £65 for four litres/20 metres coverage I would expect it to be good. Is it noticeably better than similar but much cheaper cleaners? Thanks for any advice.
     
  2. noisette47

    noisette47 Total Gardener

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    It depends what the black spots are! If they're mature lichens, the only thing that will remove them is Hydrochloric acid, AFAIK. This is my go-to site pavingexpert.com There should be some up-to-date, unbiased advice on there :)
     
  3. pete

    pete Growing a bit of this and a bit of that....

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    I've been trying "Wet and Forget", it kills lichen, but again, what are the black spots, what causes them.
     
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    • WeeTam

      WeeTam Total Gardener

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      14_15% bleach kills off the spots. Bac. 50 also,not tried that one myself. Very toxic so full protection for you and wildlife. 30 quid for 5 Ltr on ebay.
       
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