I went to a local health food store and got organic bulk whole grains. No organic mills around here in the GMO belt... ugh. That way I could avoid corn and soy. For my small flock of layers, it wasn't too very expensive. Got the recipe from Garden Betty website. They took awhile to understand to eat it since they'd been on layer crumbles from a feeder and a concrete floor their whole lives (got them at 9 mo old). Didn't even know how to scratch. But so far they seem to be healthy and laying okay once they transitioned. The eggs aren't as dark brown, but are still good size.