Sorry I couldn't help myself with the title. I have been letting my 3 week old chicks in a pen in the yard with supervision. Since they are eating some bugs and grass I bought some fine grit for them. I put a small dish with some of the grit in it, you would have thought I put a bowl of mealworms in with them. Took it back out as I was afraid they would eat too much of it. Do they know when to stop or will they eat too much of it? Is it too early to give it to them?