Okay. This is kind of a trivial problem, but it's been bothering me for a whole month, and I still don't know what to do. Time to ask the experts, I guess. I live in Maine, and I have three (super fluffy) Wyandotte pullets who free range from sun-up to sunset. They have a small (4'x7') coop inside a snug, well insulated horse barn, and free access to both the barn and the outdoors. I'm not worried about them being cold in general, but I am worried about the floors, and about frost-bitten toes. Here's the set-up: ~ The coop (which they never hang out in, except to sleep) is well off the floor and deeply bedded with saw dust. No problem. ~ The horse stalls (which are horse-free in the day time) are sunny, have tightly fitted rubber mats, and are also deeply bedded. Again, no problem. ~ The barn aisle, however, is plain old cement, and that's what worries me. Will my girls get frost bitten feet if I let them run around freely all winter? I priced rubber mats for the whole aisle, but this would cost a thousand bucks (!) and that ain't happening. Thank you!