how to remove mildew stains using vinegar
Quickly dry affected garments in direct sunlight, then, if the stain is still there, do it all again. Repeat the process until the mildew is gone. Water and vinegar is another simple way to rid clothing of mildew. Use equal parts white vinegar and water, and soak the solution on soiled areas to remove mild stains. For tougher stains, try full-strength vinegar instead.