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Why did my wood fence and deck develop black spots after cleaning with Stain Solver?

April 26, 2017Black cleaning deck develop fence solver spots stain wood

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Why did my wood fence and deck develop black spots after cleaning with Stain Solver?

1 Answer

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The black spots were probably there on the wood before you started cleaning. They were covered by existing dirt. Usually the black spots are concentrations of mildew that requires a second cleaning with additional scrubbing.