I live in a desert climate, so my Camelbak bladders usually dry quickly and completely just being hung up with a wadded-up paper towel insidr to keep it from collapsing. I have often put a half-full bladder in the freezer and that has been an excellent way to avoid the cursory cleaning and then hanging-til-dry that I normally have to do.

I did live in the midwest for two years... The humidity makes it a whole different ballgame... Be careful with the bleach.

DWR