Just as its listed. I have my babies on medicated chick starter by Purina, but as I hand tame them, I have been giving them mealworms out of my hand. (I raise my own) Then the thought occurred to me .. what if their little tummies can't digest the mealworms without grit!? I haven't thought to get them any grit at this stage - they are less than a week old. Help! I don't want to hurt my little uns.