To learn more, read Food Storage and Handling for Campers and Backpackers.
Tip: Critters that hang around campgrounds are accomplished raiders, so don't leave food or garbage out overnight or unattended. Seal up everything in a large bin anytime you're away from camp and lock it in your vehicle at night. In bear country, check the local regulations—there might be food lockers available if bears in the area have been known to break into vehicles. To learn more, read Food Storage and Handling for Campers and Backpackers.