In the backyard of the house where I grew up, there was a narrow and flat band of grass 10' in width which was next to a fairly steep hill, followed by a flat area that was also grassed, which finally abutted woods owned by someone else. My parents never tried to plant grass on that hill so it was always an overgrown tangle of wild growth.
In 1968 when I was 16, a woodchuck family burrowed into the hill. Some of their tunnels were underneath the lawn closest to the house and in a couple of spots, the ground started sagging when you stepped there. Mom was concerned about this and asked me to try and get rid of the intruders. I tried smoking them out, and then flooding them out, and last I tried live trapping. I caught several raccoons and a few other critters but never the woodchucks. Since the sagging of the lawn didn't get any worse, and I was clearly a woodchuck removal failure, mom decided to let things be for the time being.
Slow forward 57 years - my brother now owns the house and the woodchucks still own the hill, both parties living in peaceful coexistence.