The brit made lifeboats left in the white container have a very long shelf life. These are hand made , heavily laquered and more robust than common strike anywhere matches. I've noticed when I stock a few in a PSK they are more prone to damage. Duct tape's shelf life depends on how it is stored in different environments. Ziplocks do break down over time. It's not a bad idea to periodically check all kit items anyway. But I wouldn't toss gear out except for specifically dated medical items, and even some of these retain a good percentile of potency after expiration. This stuff isn't like milk or yogurt, but it doesn't hurt to periodically renew bonds with your button compass either.