Often, when we are over-stocked on an item, we make a duplicate listing of the item on our website and mark that listing as a closeout. We separate out that inventory, with the short shelf life, and place it in a different section of our warehouse. Customers who purchase the regularly priced item get the fresh inventory, and customers who purchase the closeout item get inventory from the discounted closeout short-dated stock. We make an effort to indicate on the closeout product listing on the website, the listed “best by,” or similar date indicated by the manufacturer in order to provide the customer with the specifics of the dating on that inventory.
Note that according to the FDA: “With the exception of infant formula, the laws that the Food and Drug Administration (FDA) administers do not preclude the sale of food that is past the expiration date indicated on the label. FDA does not require food firms to place "expired by", "use by" or "best before" dates on food products. This information is entirely at the discretion of the manufacturer.”