The shelf life of Kingsford Original charcoal is indefinite as long as the product is stored in a cool, dry place. If the briquets become damp, they will not light efficiently. Kingsford Match Light Charcoal and Kingsford Match Light Charcoal with Mesquite have a shelf life of 1–2 years if stored properly. If a Kingsford Match Light Charcoal bag is left open or becomes torn, the solvent will evaporate. This will also prevent the briquets from lighting properly. To extend shelf life, we recommend that you re-close the bag properly after each use.