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How am I supposed to clean these fuckers?
I am simply unable to dry them out completely, and after a while timy spots of weird "things" form on their inner surface. That little thing you are supposed to sip from is the worst and completely covered with this (what I assume to be) black mold looking thing. And it's so hard to reach I cannot clean it, not even with toothpicks. I have to buy a new one like every few months. I've bought a metal one, but that's just heavy and impractical, but it is much much easier to keep clean. It dries completely next morning and nothing weird on the surface.
