My chickens get free choice layer crumbles (I believe it is Dumor from TSC). I've tried giving those hens every treat I can think of and it all lays untouched--I guess they are just not into "outside" food. All they are eating is their layer ration. I would think that food designed specifically for layers would have enough calcium in it that I don't need to put out eggshells/oyster shell. I do have some dried eggshells ready to go out to them but I'm wondering if they really need it. My hens only just started laying and I don't have any soft shells in our grand total of 10 eggs collected so far. Is this a problem that would show up later in the laying cycle? Thanks in advance!