Now that Spring is finally here, we've moved our 3 ducks back to their outdoor pen, which is essentially a 10'x25' dog cage (with suitable chicken wire and cement paver reinforcements to keep predators out), and some cedar chicken coops on the inside for the girls to lay their eggs in, and for them to sleep in if they want to. (Although truth be told, they spend most of their time sleeping outside, and don't use the coops for other than laying eggs.) They've had that outside pen for a couple of years now, and in that time, they've pretty much trampled our eaten everything green and living inside the pen, and it's basically just bare dirt now. Which gets a little muddy when we hose it down to clean it each morning. (However, the ducks love the mud, so *they* don't mind.) Anyone have any suggestions for a more suitable surface to lay down there? Something more amenable to cleaning and a bit more duck proof? We've added sod in the past, but again, it's not long before the ducks kill it off. We're open to better suggestions.