Suncoast Cleaning 14 Report post Posted August 23, 2004 What would you use on a stain left by mulch on a concrete driveway? Share this post Link to post Share on other sites
0 RyanH 14 Report post Posted August 23, 2004 I've poured the outdoor clorox directly onto tannin stains from leaves and it has worked really well. Perhaps putting some in a sprayer and covering the area will be effective on mulch stains as well....I think chemically the stains are similar. Share this post Link to post Share on other sites
0 Brian Keating 14 Report post Posted August 23, 2004 Have you tried oxalic acid to remove the stains? It will remove rust stains so I'm guessing it will remove the mulch stains. Share this post Link to post Share on other sites
What would you use on a stain left by mulch on a concrete driveway?
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