I bought 100lb of raw oat (not dehulled), mixed it with chicken feed i bought from the feed store. sometimes the chickens will eat it, other times they would just pick out the chicken feed and push the oat to the ground. I'm thinking of roasting the oat and find a grinder to grind them down before feeding the chickens, but grinders are expensive and i can't find a used one for now. Do you all know of any better way ? Please let me know. Thank you.