I thought for the longest time that I needed to do all sorts of things to take meticulous care of my calls, but I don't anymore. Although I don't advise this, I've kept the same case of 4 mouth calls in the ashtray of my truck during this entire off season, heat of summer and cold of winter, and they don't sound any worse at all, actually a little bit better. I'll have to give credit to the call maker I reckon, bc these things haven't worn out a bit. I honestly don't think the freezer or fridge is necessary, but I guess it's different for all types of mouth calls. Preston Pittman told me that once he gets the call broken in to where it makes the perfect sound he's looking for, he puts it in a ziploc bag and into the freezer. Stores it there when it's not in use. That's too much of a hassle for me, and I know I'd forget my favorite call at least twice in a season. I'll keep mine in the truck.