I was wondering about the heat too. I leave my manure pile to sit most of the winter and it really heats up, by the time spring rolls around and everyone's coming to get it to till into their gardens it's a lot of ash & a bit of smoke when you get to the center. It's not near anything that could catch on fire but the pile itself, hasn't happened yet, knock on wood. I took advantage of the warm spell awhile back and spread the whole pile on my neighbor's corn field. He does both field & popcorn, he's contracted with Orville Redenbacher and this year the field I fertilized he is doing in a medium hull less popcorn. I donated the poop and after he harvests I get to walk his field (okay ride the 4-wheeler and pull the little wagon around his field) and pick up all of the missed ears to shell for myself to use, yay!