You wouldn't eat with a fork, put it away without washing it and then use it again the next day, would you? Why would you use a whistle without cleaning it? I've done the mouthwash thing in the past and it works, but now I just scrub my whistle with hot water and dish detergent after every game and then keep it in a baggie. Works for me...been using the same clean whistle for 3 years now.
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