OK, here is the deal, we used to just throw the liner away and get a now one, but we just bought the "Scattered Mickey" curtain as our "outside the tub" one and it's clear. Both the Mickey and the liner have this powder residue on them that you don't notice unless you have 2 clear curtains. We've tried just washing them with a paper towel and some cleaner but that doesn't work, I washed the liner and shredded it in the washer, bought a new liner, and still don't know what to do with the residue on the curtains. Maybe I'll give the washer another try, this time on the gentle setting.
Thanks everyone!