The lifetime of glue sticks might vary based on variables such as storage circumstances, use frequency, and the quality of the glue sticks. Generally, unopened glue sticks may persist for many years when kept in a cold, dry environment. Once opened, glue sticks should be utilized within a reasonable duration to avoid them from drying out or becoming brittle. Storing glue sticks upright in their original packaging may help retain their quality and prevent them from warping.