I have all different age chickens....6 laying hens, 2 grown roos, 4 almost 19-week olds (3 pullets I'm expecting to lay any day now & 1 roo), and 10 almost 9-week olds. I've seen ALL of them eating the Starter/Grower that I keep out for the younger ones, but I still keep out 22% Layer for the big girls + oyster shell free choice (which they never touch). Should I remove the layer feed to make sure the younger ones don't eat it? Should I go buy some Flock Raiser or something they all can eat to make sure the young ones aren't getting into the calcium stuff? If I do switch over to Flock Raiser or something, I'm concerned the grown ones might have trouble with the food change. Any suggestions on that or do they switch to a different food pretty easy? Also, I'm not sure what to do with all my layer feed in the meantime while they're eating something else. I have about 1/2 50# bag of 16% layer that's already "on hold" for awhile because they are currently eating 22% layer to up their protein. I just bought the bag of 22% maybe 2 weeks or so ago. Also, earlier today I bought some of the new Purina Omega-3 Layena & have already opened it & mixed a little in with the 22% layer. So, I have 3 open bags of feed I don't wanna waste. If they are kept in an airtight, rodent-proof container, will they be ok over the next few months until they are all laying age? Thanks!