My rooster has a significant amount of frostbite on his comb and wattles. From what I've read on this forum, there isn't much I can do about it other than watch to make sure it doesn't get infected, applying neosporin if it does. What are the signs of infection? I put some bag balm on him just now, and the frostbitten area is not hot to the touch, but that's the only sign I know to watch for. Thanks in advance.