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By Dean (Guest Post)
04/04/2006
If it is mold,one part bleach and two parts water will clean it off.If it is algae or moss a product found in the plumbing dept of Home Depot may work.It is called Root Kill by Zep.Also known as blue crystals.Follow directions.The green stuff will eventually return and will have to be treated when it returns.
By P Meloche (Guest Post)
04/03/2006
I use 2 cups white vinegar in a 2 gal. pail of water, apply with sponge, allow penetration, rub with sponge, then hose off. This solution has not harmed the landscape plants.
By
04/03/2006
You can use a water and bleach solution and a scrub brush. I do not think there is a way to prevent it from coming back. You may want to check with a log home supply center to check if they have a solution that will not harm plants. Good luck!
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