Hi - we just received our avg 1.5 year old chickens 2 weeks ago. I was reading on another post, frost on the inside of the coop window is bad (too moist inside). It's super cold here in Mi today (felt like -5 at 8am, actually 11 degrees). Our coop is made of fir and I have pine down for bedding. It's a deep layer that I turn over 2x or more per day. Heated waterer. Chickens are molting. Adding straw tomorrow. Should I premtively put bag balm on their feet/combs?