IFA Chick Grit digestive support supplement is made from finely-milled granite to help baby chickens properly digest their food. The insoluble grit particles work in the gizzard to grind and break down food so it can be digested. Grit is an essential part of your chick's diet to support healthy growth and development. IFA's Chick Grit is recommended for chicks from birth to 8 weeks old along with a high-protein chick feed like IFA Chick Starter.