What is worse than finding mildew on your clothes in storage? I can say, without exaggeration that finding mildew on a piece of beloved clothing can break a woman's heart, especially when she can no longer purchase a similar piece. However, before you decide to throw them away, try to use some lemon juice to remove the mildew. Mix lemon juice with salt and rub the paste onto the affected areas. Then have the clothes dry in the sunlight. You may have to repeat the whole process before the mildew stains are totally gone.