After prolonged use shower curtains can get pretty grimy. If your shower curtain isn’t exactly in tip-top-shape thanks to mildew and build-up, all you need is a little lemon to save the day. First, wash your curtain in soapy, hot water. Then rub a lemon wedge over all of the stains and set your curtain out in the sun to dry. Once it’s dried the stains will have disappeared!