I have a couple of gins close by so I use cotton hulls the most. There is an oil producer in Memphis, I could pay for a truck load of cotton seed hulls. A couple of horse stables nearby that I can get a few loads. Cattle farms are farther out, chicken farms aren't around here close. I hear of some AR farmers getting the water, chicken house washout to add to their gardens and fields. I tried some chicken manure some years back. We dug into the pile and found dead chickens. My brother wasn't into that. So we didn't get that much and never went back.