"soak them overnight in 50% water 50% scope mouthwash" works for me, non alcohol mouthwash and get 2 years out of a call. Funny my calls sound the best too right before they die! LOL I will try the freezer thing instead of soaking all year in the mouthwash solution. I used to soak in full strength and did notice that some calls loosened up or the tape dissolved. Read an article somewhere years ago by a dentist that always had a sore throat during turkey season so he let his call grow some uglies and then tested to see what was there. He said you didnt want to know!
