I was wondering where you can buy grit at, and what grit is the best kind? (brand or ...) I have 5 weeks old chicks that i would like to start getting treats, as with older hens and roosters. So it would be nice if i could just get one bag that the both of them could eat. I also have chicks in the brooder thta are maybe 2 weeks old, but are bantams so much slower growers. So if they can eat the same stuff the 5 weekers and older ones can that would be great, but if they cant they cant. It would be nice to get just one bag of grit.