[Leoskeys]

Hi, we had our chimney re-done(brick to stone), and the Mason did a beautiful job. However, he failed to properly shield our Trex composite deck so there are cement stains all over. We’ve tried various cleaners liked “wet and forget” and Valspar deck cleaner. We’ve obviously used a pressure washer too. Alas, none have worked!
Google didn’t provide any new insight so I turn to the collective mind of the forum for suggestions.
I tried to attach photo, not sure if it worked.