Rather than emptying store shelves, preppers say that it's best to stock food, water, and other emergency supplies slowly and diligently. Rotate out your older perishable goods, using them before they rot.
"Start topping off your preps" Charles said. "Do it over time."
Personally, he likes to keep Chef Boyardee on hand. "It's good apocalyptic food," he said, stressing that it's a bad idea to buy canned goods you wouldn't actually like to eat, in an emergency (for him, that means Spam is out of the question.)