In my experience, jello jigglers only last a couple of days in the fridge. Any longer and they become "watery." If uncovered, they will dry out around the edges. Either way, once they have set it is best if they are eaten fairly quickly.
Jello can become a bit rubbery if left in the fridge without a lid in a few days. With a lid on the container, Jello can stay fresh for about a week or two.
This food will only last a few days. 3 days in the refrigerator if the food is stored properly. Place in an air tight container for the best results. You can transfer the food to the freezer if...
If the new pack is not opened it can last for up to 2 weeks. If the pack is opened, it can last for about a week. That is if this is stored in an airtight container.