If your pizza has been sitting in the fridge…

Lucky you. According to the USDA, if your pizza has been refrigerated at a temperature lower than 40 degrees fahrenheit, its safe to eat up to four days.

If you want to eat a slice thats been sitting in the fridge for five days, it’s generally okay too—but after four days your risk of getting a food borne illness increases and who wants that?

It’s much safer to just order another pizza.