The reason calls freeze up is because moisture on the reed freezes. I dont know of any specialty calls that prevent this, though im sure there are. I know the inhale calls arent supposed to freeze up as much. im really going to stick with my opinion on the can. i think theres alot of people that see it on the videos working or theres people who get a deer to come in one time with it and think its the greatest thing since sliced bread. i've used mine quite a bit and i really dont think it makes much of a difference. a true talker will work any day of the week and twice as good on sundays.

slayer