Oxalic acid - Knowledgebase Question

CHESTERFIELD, VA (Zone 7A)
Question by myirishfamil
March 27, 2009
Your website says to use a deck cleaner with oxalic acid, however most cleaners no longer have that ingredient in them including Behr deck cleaners, so what is the name of the product that has oxalic acid in it at my Home Depot?


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Answer from NGA
March 27, 2009

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If oxalic acid is not available, try a cleaner with Citric Acid. This acid is milder than Oxalic Acid, so it is appropriate for use on hardwood decks with fine details. It is also good for neutralizing the surface of your deck.

An alternative is Disodium Peroxydicarbonate Oxygen Based Bleach. This cleaner is an environmentally friendly powder and is an excellent brightener for wood decks. However, this product is not suitable for new wood and must be used within 6 hours of mixing with water.

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