I guided for ducks and geese and a fellow guide taught be a trick cover the inside of a book of matches with chapstic and
rub this under the ubder side of the reed and then the top of the reed the moister seams to glide off the reed preventing freezing! ....I told him that I was going to use it on my pred calls and he said if it is a metal reed squeeker tip call
use a couple drops of Break Free CLP when it is dry and warm!
......it works very well both of them.... hope this helps!
Jonathan