We store what we eat & eat what we store so we're on a first in - first out system for food storage. For other things it's kind of "when we think about it". I found iodine water treatment tabs in my ruck last year with a 1973 date on them & coffee bags from a 1982 backpacking trip. Evidently I hadn't had a coffee "jones' or needed to purify water while using that ruck for a LONG time.
gino <img src="/images/graemlins/grin.gif" alt="" />