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Registered
Join Date: Jun 2000
Location: bottom left corner of the world
Posts: 22,700
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On amazon you can buy tea tree oil. You mix a bit with water then wash the hat in it, then leave it out in the sun. It's natural so doesn't poison you but kills of any nasties. And the sun also kills off the musty and other smells. I've used this trick for shoes too.
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