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James City County/Williamsburg
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Mildew
Mildew is a fungus. It grows most extensively in warm, humid environments. Most growth occurs at temperatures of 75 degrees to 85 degrees Fahrenheit. Mildew fungi can be distinguished from dirt by placing a drop of fresh liquid chlorine bleach on the area in question. If the discoloration is mildew, the spot will fade or disappear.
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