When you squirrel away energy bars, pay attention to the quality of the packaging. You want something that will resist abrasion. Clif bars are great for this purpose. They have the further advantage that they can actually be eaten.

The original granola bars had packaging that would wear through. One dark and stormy night, as we were preparing to bivouac, I opened one and finally managed to choke it down, stale and dry as it was, simply out of a sense of duty that I would need its warmth in the hours ahead. I realized then that there is probably a lifetime limit on the number of those things an organism can consume safely without side effects...

Clif bars have solved that problem. No connection, etc....