Difficulty: Moderately Easy
Step1
Remove the shower curtain from the curtain rings very carefully. Lay it down, either in the tub, the shower floor, or the bathroom floor. If any part of your shower or bathroom floor is made of wood, take the shower curtain to another part of the house which has a tile or linoleum floor for the next step.
Step2
Mix 1 cup of white vinegar and 1/2 cup household ammonia in 1 gallon of warm water in a bucket. Put on rubber gloves. Yellow household gloves are most effective, but disposable latex exam gloves are cheaper and can still be reused several times. Use a sponge with a plastic scrubber on one side. Dip the sponge into the water. Starting at the top, begin rubbing the shower curtain gently with the soft side of the sponge. Slowly but surely work your way down the shower curtain, stopping at intervals to wring your sponge out in the bucket of water. Pay special attention to the inside of the shower curtain, but be sure to also wash the outside.
Step3
Turn your sponge over and use the rough side to remove any stubborn soap scum. Take care not to rub too hard. You can also use a light duty scrubber if you're concerned about damaging your shower curtain.
Step4
Rinse the curtain off in the tub or shower, or take it outside and hose it off. A clothesline is particularly helpful for completing this step.
Step5
Allow the plastic shower curtain to dry completely, and check it for any remaining spots of soap scum. If you find any, go over it with a spray bottle filled with equal parts of vinegar and water and a clean cloth.
Step6
Rehang your shower curtain on the curtain rings.