Last weekend, I came across some commercially canned products (various types of food) I'd tucked into a storage locker in a seldom-visited location probably more than 6 years ago and then forgotten about. I would have thought that a mere 5 or 6 years was still in the safe storage period (with of course considerable loss of vitamins)- but nooooo, one or more cans had leaked and corroded the others, which in turn leaked... well you get the idea. Everything was mummified so there was little to no smell, but cleanup was still nasty and embarrasing, both. Since I've done similar things with cans in the past, and for longer, this leakage was a considerable surprise to me, not to say that it should have been. Word to the wise- rotate often!