To remove mold or mildew from clothing, first soak the clothing in a solution of water and a cleaning solution, such as Oxyclean or lemon juice. Let the clothes soak for about an hour and then wash them as you normally would. If the mold is not out after cleaning, repeat the soaking method and try again. Clothes get moldy when they're exposed to moisture for long periods of time. To avoid moldy clothes, store your clothing in a dry location.