Here are Argentville Dairy we milk Registered Guernsey cows that are known for their Golden hue in their milk (which is carotene), and is a SUPERIOR cow of all the dairy breeds. Our cows are strictly grass fed, and are hormone and antibiotic free. We offer on the farm p/u only. We bottle our milk in 1/2 gallon glass jars. We are located about 15-20 minutes NORTH of O'fallon, MO. To get your name placed on our customer list, feel free to contact us by email, the provided phone #, or friend us on facebook! We look forward to hearing from you!!!