i know this was a bit back in the posts but something that works for frozen poop is exactly what I use for frozen waterers too- the tire punch tool that comes in a tire repair kit. If you hit it at an angle towards the bottom of the pile it pops right up. I use sawdust under roosts but if it gets too low the poo will freeze to the bottom. Of course I'm just plain country so a quick swipe across the coverall pant leg to clean the tire punch and you're ready for the next coop waterer;-) Hey, the poo is frozen so what's gonna stick? Lol