The shelf life of Dean Foods products can vary depending on the specific product type and how it is stored. Generally, many dairy products, such as milk and cream, have a shelf life that is indicated by the "sell by" or "use by" dates printed on the packaging. Typically, unopened milk can last about one week after the "sell by" date if stored properly in the refrigerator. Other products, such as yogurt or cottage cheese, usually have a shorter shelf life, often around one to three weeks, again depending on storage conditions. Frozen foods generally have a longer shelf life, often several months, as long as they are kept frozen continuously. It is always a good practice to check the individual product packaging for specific information on shelf life and storage recommendations. For more accurate details, visiting the current Dean Foods website may provide additional insights regarding individual products.