My BO rooster has gotten frostbite on the tips of his comb. I noticed it the morning we had -22F. I add an extra 100w bulb by the roosts and left the lights on longer 10pm til 4pm, the next morning it was -14F. and the frostbite has not gotten worse. My coop is insulated and ventilated up high, way above the roosts and no drafts. Now here is my question should I put vaseline on his comb and wattles? I have read in other forums it helps prevent frostbite,I have also read it does nothing for frostbite and I have read it may even cause frostbite. I'm so confused I really want to help him but I don't want to cause further damage. I need advice from people who live in areas with sub zero temperatures like my own.