Hi! My chickens are 12 weeks old... When should I start real life grit and scratch? They live in a chicken tractor, so they are always on a pretty fresh parcel of ground where they dig and hunt all day....they LOVE LOVE LOVE clover! I took them through a full 5lb bag of chick grit, but that has been gone for a few weeks. When can I start giving them scratch grains and real grit? And what is the best way to do that, just throw it in their run? I fed them oatmeal on Sunday. I made a quarter of a cup for 5 chickens...went back in an hour it was ALL GONE! I tried feeding them some just white sandwhich bread torn up, but they didn't care for it Any other words of advice or wisdom when it comes to feeding 12 week olds?