Oak Farms Dairy is proud to offer our customers and consumers only milk from farms whose owners and managers have made a pledge to us and to you. Our farmers have certified that artificial growth hormones are not given to cows that produce the milk that is sent to our plant for processing. Those farmers’ pledges are in the form of signed affidavits maintained and audited by our milk suppliers. Through systems of validation of farm practices and plant manufacturing practices, we are confident that consumers can trust that what they read on the label is what is in the bottle. Thank you for your inquiry.