I filled the bottom/run part with sand and dirt. It is very easy to keep clean and they love to use it for dust baths. -coastal hay in the nest boxes worked really well for our bantam hens. -never used "bedding" such as shavings in the open air style coop due to dampness. The gals had a roost that they loved to perch on at night. I think bedding is a matter of preference. People use different things, but we loved the sand. The waste scoops out with a small shovel very neatly and quicky. Good luck with your coop and have fun with your little bantams! Bantams are absolutely precious!