The ground my run is on has a lot of clay in it and after rain/snow it's a sticky, yucky mess. I've seen one run on here where they put down gravel, covered it with weed barrier (?) then covered it with sand. I was planning on doing that but then I started reading about the deep litter method and I like the idea of it. Can I do the deep litter on the ground or do you think it would make a worse mess? I plan on putting a roof over the run but it might not happen until fall.