There are several ways you can tackle a shower liner. 1) You can throw the liner in your washing machine and instead of using laundry detergent, use InstaGone. Run it for one cycle and let hang dry. You will be amazed how new your curtain will look and you no longer have to perpetually buy shower curtains! 2) Spray it on…stains are gone! Keep a bottle of InstaGone in your shower and when you see mold and mildew starting to grow, spray it on. By spraying directly on the stain, you just have to wait five minutes and the stains will disappear. You can reapply if necessary.