Lunch box storage and the availability of a microwave or oven for heating leftovers or single-serving meals also are factors. If a lunch box will be stored in a school locker, car, or other unrefrigerated area, an insulated cooler may be the best choice. Consider convenience, durability, and price. P Reduce risks from foodborne illness by keeping lunch box, bag or cooler clean. Wash thermal and re-usable containers after each use.
P Keep kitchen and food preparation area and tools clean.
Use a clean tool for each task. P Wash hands in hot, soapy water before and after handling food or eating. When frozen sandwiches are packed, they thaw gradually and should be ready to eat. Being cold makes them less susceptible to foodborne microorganisms that may cause illness. P Count on leftovers.