Back when I lived in Grand Rapids I had friends visiting from out of town and we went to the local grocery store to pick up some supplies. We found a box of Lucky charms on the shelf that was over a year past its sell-by date. It must have been on that shelf for years at that point. To test that out we left it there and every time my friends came back over the next year we would stop by to see how our little pet box of cereal was doing. I’m guessing by now it must be gone… Lucky Charms just wasn’t very popular in that neighborhood.