Things You Will Need
Getting rid of these spots with a hose can be frustrating, but with the right cleaning method, you can forget about those disgusting stains forever.
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Soak the spot on the concrete with hot water, preferably boiling.
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Sprinkle one cup of baking soda over the top of the stain. If the stain is bigger than 6 inches, apply an extra half cup for every extra 3 inches of stain.
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Scrub the baking soda into the stain with a hard-bristled brush, and let sit overnight.
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Pour a half cup of hot water over the top of the baking soda, and scrub the stain with the hard-bristled brush once more.
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Wash the baking soda, and stain, away with hot water. If the concrete you are washing is in a basement, wipe up the liquid with a towel, or use a wet/dry vacuum to remove the water.