I've been using fallen leaves in my coop and run. I read about it somewhere and latched on to that idea immediately. Free litter material! However, I don't think they're breaking down very well. The area under the perches gets caked. The leaves in the run stay wet - of course, nothing really dries out here this time of year. And there's a bit of smell. Would it help to get shavings and mix them in? Do I need to buy hydrated lime? I also have some wood pellets I could use. What's the best way to create a good deep litter and utilize the leaves that are already in there?