Assuming you don't free range most of the time and want to let your birds be outside... And assuming that digging predators (possum) are a possibility... What do most people do with their runs? There's someone here selling runs with the entire bottom covered in hardware cloth. I figure if I went with that option, I'd have to put dirt on the floor - wouldn't be too fun or comfortable for them otherwise. How much hassle is it to dig a trench/ put an apron of cloth around it instead? Or does anyone have any other suggestions what to put around the run to keep critters out?