Chipmunks are burrowing rodents that build tunnels in homeowners’ backyards. The pests dig about three feet down to create a chipmunk den that stays warm in the winter. These burrows can ruin landscaping and cause property damage. Chipmunk hibernation is somewhat restless, as the pests do not fall into a deep slumber. Instead, they wake from time to time to eat from their caches of food. Chipmunks may even emerge on warm days to forage.