Lots of food is eaten during Thanksgiving, but sometimes just as much still remains. How do you know when the leftovers should be thrown out? Judi Van Hulzen, a nurse at Marion County Public Health, says any perishable food that has been unrefrigerated for more than two hours should be discarded as it becomes much more prone to airborne bacteria at that point. If you put the food back in the fridge, try not to pack it too much. The refrigerator needs cold air to be able to circulate to keep food cool. She says to put food in small, shallow containers to make it cool more quickly, and to always keep raw meats at the bottom of the fridge so it doesn’t drip down onto cooked food.