My parents bought several large bags of them on clearance after Halloween one year when I was in early elementary school. Every year they would pass out those peanut butter nasties, stored from the same black garbage bag. We were the laughing stock of the neighborhood. When my siblings and I returned to school on Nov 1, we hung our heads.
That garbage bag - no joke - lasted until I was in high school. The nasties got so stale you'd have to microwave them to soften them up. Ants got into them - they still passed them out (telling kids that the ants were "sesame seeds.")
Then, two years ago, my dad told me that due to his health (having had strokes, etc.) that he was going to stop passing out candy for Halloween. He wanted to give me all the candy he had left from the previous year. And I am kidding you not: he had peanut butter nasties.