All you do is throw it in the washing machine with either baking soda, bleach, or vinegar!
As I have mentioned before in my previous post, baking soda is wonderful!
Try cleaning your liner in your washing machine with two bath towels on the gentle setting. Add 1/2 cup baking soda to your detergent during the wash cycle and 1/2 cup vinegar during the rinse cycle. Let it drip-dry; don’t put it in the dryer.
Get mold and mildew off your shower curtains. Wash them — along with a couple of bath towels (to prevent the plastic curtains from crinkling) — in warm water with 1/2 cup chlorine bleach and 1/4 cup laundry detergent. Let the washer run for a couple of minutes before loading. Put the shower curtain and towels in the dryer on the lowest temperature setting for 10 minutes, then immediately hang-dry.
Clean those ugly mildew stains off your plastic shower curtain by putting it and a couple of soiled towels in your washing machine. Add 1/2 cup laundry detergent and 1/2 cup baking soda to the load, and wash it in warm water on your machine’s regular cycle. Add 1 cup white vinegar to the first rinse. Before the machine goes into the spin cycle, remove the curtain and let it hang-dry.