A couple weeks ago I began treating my flock with miconazole for favus. They began picking the cream off each other so I switched to Lotrimin spray and dabbed it on their combs and wattles with a cotton ball. Now it looks like their combs are frostbitten. It's been between -11 and -20*F at night and a high of 15*F during the day for the past couple weeks. My coop is well ventilated and not heated. Do you guys see any remains of favus on the girls? I realize my roo still has it because he's been almost impossible to handle, even after dark. If so, which do I treat first? Thank you so much for your help!