I cleaned some wood, PT runs & Pine risers, steps on my father's other house yesterday with EFC-38. It worked pretty well except for some green mildew stains that would not come out. I let it dwell for half an hour and kept it wet by adding more chem. I also rinsed and reapplied...nothing. I did also brighten with citralic. What will take out the stains? A little bleach in the mix?
I cleaned some wood, PT runs & Pine risers, steps on my father's other house yesterday with EFC-38. It worked pretty well except for some green mildew stains that would not come out. I let it dwell for half an hour and kept it wet by adding more chem. I also rinsed and reapplied...nothing. I did also brighten with citralic. What will take out the stains? A little bleach in the mix?
Thanks.
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