OK, I'm a newbie, brand frickin newbie. I'm working on my coop, starting with 6 Pullets that should be here in about 2 weeks. I'm trying to figure out the inside design of my coop using the deep litter method and can't seem to find what I'm looking for. I see bars for roosting straight across and some that are angled at about 45degrees with a screen under them. If I do the angled roost, do I need DLM throughout the entire inside, or just under the roosts? Please help me help my new arriving chicks!