Mold and mildew grow quickly on wet fabrics, and you may have put it away before it was completely dry.
How To Get Mildew Out Of Outdoor Furniture. Wicker furniture has places that you just can't reach with a washcloth! Regular cleaning of outdoor furniture.
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Brush off as much as possible. Here are instructions for how to clean this you can also check out various mildew cleaners and removers, that can be used on outdoor fabrics, if you're concerned about using bleach. White vinegar both removes mildew and freshens outdoor fabrics that have developed a musty odor.
Whether it's removing that old, musty, moldy smell or cigarette odor, apparently several furniture rehabbers are having odors can be from mold, mildew, chemicals and bacteria so you don't want to just cover up the odor to get the smell out of furniture.
Wicker furniture has places that you just can't reach with a washcloth! Accidentally left your clothes in the washer for too long? Cleaning outdoor furniture mildew is one aspect of maintenance that extends the life of your furniture. When you get outdoor furniture, make sure to wipe it off before you let people sit on it.