Jell-o isn’t a health risk until it’s opened and exposed to the elements
We probably don’t need to tell you that jell-o is full of sugar. It’s this sugar content that helps to maintain its shape, its texture, its taste, and its longevity. If you have an unopened packet of jell-o, you can now rest easy knowing that you can keep it in your cupboard for years without any worries.
That’s because this food is basically immune to bacteria when in its packaging, but things change a little when you open that packet up. While you don’t have to then place it in the refrigerator, you do have to make sure that you eat it as quickly as possible. We can’t imagine that would be too much of an issue.