Assuming you are asking how to clean a clear vinyl bag that has become dirty or stained:
The best way to clean a clear vinyl bag is to first empty it out completely. Then, using a mild soap and warm water, gently scrub the inside and outside of the bag. If there are any stubborn stains, you can try using a soft-bristled brush. Once you have finished scrubbing, rinse the bag thoroughly with warm water. Finally, dry the bag completely with a clean towel or let it air dry.