i learned this tip about 20 yrs ago, from a fellow guide and pro staffer in pennsylvania denny gulvas. every spring i was getting a sore throat and could not figure why. i was out with denny one dayand told him about it. i was getting bacteria from my mouth calls causing the sore throat. so heres the tip now i soak my calls in a good bacteria killing mouth wash for about a day then let them airdry for another day before putting them back in their cases, also they have a nice mint flavor to them instead of nasty bad breath taste lol. thanks for your time strut