Rice Krispie Treat Allergies: The base of our rice krispie treats are all dairy-free, however some toppings contain dairy. A couple of our treats contain nuts however, we do our best to separate nut and non-nut items. We do not recommend this product for people with severe nut allergies. Rice Krispie Treats in their original plastic wrapped will last approximately 3 month at ambient temperature. Once the individual treats are opened, they are best enjoyed within 5 days. To save your treats for later, here are some tips: As long as they are in original packaging they can be frozen up to 6 months. They are best defrosted for 24 hours in refrigerator prior to serving.