Do individually wrapped cheese sticks go bad?
To maximize the shelf life of string cheese, do not open the package until ready to use. Properly stored, an unopened package of string cheese will last for about 1 week after the Sell By or Best By date on the package
Does individually wrapped string cheese need to be refrigerated?
String cheese is supposed to be kept in the fridge. Room temperature will speed up the deterioration process and spoilage. It should not be left outside the fridge for too long. If you’re doubtful, better discard the product and don’t pack it into your kids’ lunch box.