I use PDZ in my coop and run. Over the winter, the PDZ in the run has frozen and thawed and blended with poop and straw and everything else imaginable and frozen that way. It's starting to thaw and as I break up the hard surface, there's some seriously smelly and funny colored PDZ under it. There's also wet straw and poop mixed in. I scoop and clean as much as I can int he winter but sometimes it freezes before I can get it and sometimes when things melt, the water mixes with it and it's not solid enough to scoop anymore. Will it dry out and be okay with a layer of clean on top or should I dig up as much as I can and just replace it all now?