Shannon's solution is much smarter than mine, which is to leave crazy straws sitting in the dish drainer for a week, and then throw them away because they smell musty.
No matter how hard you wash those twisty crazy straws they are impossible to dry.
A drop of rubbing alcohol will flush out the water and dry it up. If you're worried about any residue, you can always rinse the straw right before your child uses it again.
This is what's recommended to clean/dry breast pump tubes, so I figure if it's good enough for the newly-born, my kids can handle it!
This is the perfect follow-up to another smart crazy straw tip that came in a while back: use a crazy straw to "lock" the straw inside a to-go cup.