January 11, 2017 No Comments FREE Muscle Milk at Casey’s General Store Download the Casey’s app for iOS or Android to get a FREE Muscle Milk at Casey’s. Expires 1/16/2017 11:30PM CT. While supplies last. Locator. FREE Muscle Milk at Casey’s General Store – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.