Scientific resources! You can't say a thing, but if you can show them articles, etc. that are RELIABLE and get much further. Those articles MUST include scientific studies by professionals stating the facts. Don't get mad at me for saying this, but... If you can find a professional in the feed business, which might include going to these egg factories and finding your man there, you'll get somewhere. If you can say something like this, "Professor so and so with this and this degree in college to do with this information," you can get a lot further. Kinda like saying Dr. Fauci said Covid shot is very good for you. (That's only an example, please don't get political. It's the only thing that came to my mind because I don't know main stream doctors and I needed an example.) After you go through your information with your professional's name shadowing your every word, and they still won't believe you, walk away. It's not worth it. It's their birds. Give them a BYC business card and tell them to post a thread on here if they have any problems. Be sure to tell them when they do have a problem, say what feed they're feeding...I've been seeing a lot of the casual poultry keepers really upset over the purina protein debacle. Unfortunately, I also have been seeing a lot of these casual keepers saying they are now feeding straight up corn rations to their birds! I can only scream into the void so long on that, but I gently remind people that corn is like candy for chickens.... Not a full food, very low protein and very low fat, hardly any micronutrients.. How does one approach this? the youtube homesteader feeds are full of these people, and soon they will have dead chickens with fatty livers. Should I say anything? lol