I found a new feed store just 2 miles from my house and am planning on buying feed from them tomorrow. Last week we went to check out the place and see what he had. He has laying mash but my grandfather asked him "Does the laying mash have the stuff in it for the hens to produce shell?" and the man said no. That we'd have to buy oyster shell. My question is, does it have what they need. If it didn't have what they needed to make shell, it wouldn't be called "layer" mash. He's not very educated about chickens. Example- He thinks coccidiosis is a respiratory infection. So I'm planning on buying 50lbs of layer mash and maybe 50lbs of cracked corn since I have roosters in with my hens that don't really need laying feed. I'm going to try to find something they can all eat instead of buying 2 different things. Like right now, they are eating Purina flock raiser which is perfect. But I can get everything much cheaper at this new feed store. Around 70lbs of feed for the same price as a 50lb bag of Purina. Thoughts? I also have 3 month old chicks and 4, 5 week old ducks. I have plenty of Flock Raiser for the chicks and ducklings for a while.