Acid/vinegar soaking into the surface a bit makes a less hospitable substrate for mould. Bleach might clean it initially but doesn't work so well long term. And is liable to make your sofa go a funny colour.
Cheers, I was having a disbelief moment, sounds like a better route
@bluehuw started
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Acid/vinegar soaking into the surface a bit makes a less hospitable substrate for mould. Bleach might clean it initially but doesn't work so well long term. And is liable to make your sofa go a funny colour.