We have some backyard chickens at a friend's house--we share all the costs, we did the upfront work and the research, they do the day-to-day maintenance. We're prepping for winter, and my friend told me: We are not using pine shavings on the bottom of the coop. It was just more mess to clean up, plus additional cost. Do we have to use these during the winter? If so, how deep should they be? I think we'll go through them pretty quickly - a bale every three weeks, I'm guessing. If you are ok with it, let's split the cost of the shavings - assuming we definitely need them. I told her at the beginning about the DLM, but for whatever reason she decided against it. I let her make that call since she was the one doing all the work. The coop floor is just concrete, I believe--or maybe dirt?--I can't remember. I don't know how they are cleaning the coop at this point...we talked about poop boards at one point but never made or installed any... Do you *have* to have bedding of some kind? How much--how deep to start off? And how often does it have to be replaced (or added to if you do the DLM)? I'm assuming yes, but I need a concrete and clear answer for my friend as to *why*. Sorry if that's a stupid question...we're noobs and I just need to be able to tell her, authoritatively, "yes, here's what we need and why" rather than "um, I think I read something about how you should do this."