I put vaseline on 2 of my roosters. One is a large fowl cochin and one is a mille fleur d'uccle, both of which I show so dubbing is not an option for me. I usually put it on at about 20 degrees and I only apply it every other night. My roosters love to have thier combs and waddles rubbed. I have used this method for the last 4-5 years. I only put a thin coating on so it doesnt make a mess.