Description
Though many creatures dig holes in yards, holes dug at night are likely from raccoons or skunks. The holes they dig are usually cone-shaped and three or four inches wide, but larger areas up to ten inches may occur. Holes appear in lawns and gardens when raccoons are foraging for grubs and other insects, and, according to Clemson University, raccoons will peel back newly laid sod while searching for food.
Food Source
According to the University of California, raccoons eat plants and animals. They like all kinds of fruits, berries, nuts, acorns, corn and other grains. Animals that they feed on include eggs, frogs, fish, turtles, crayfish, snails, rabbits, muskrats and insects. In cities and suburban areas, they dig for grubs and larval insects, eat vegetables and fruit grown in backyards, root through compost piles, steal picnic and pet food left outdoors and turn over garbage cans in search of food.
Habitat
Though raccoons are associated with rural, wooded areas, they thrive in urban and suburban areas as well. According to the University of California, these night creatures can live unnoticed for quite some time as they make their homes in hollow trees, outbuildings, brush piles, rock crevices, ground burrows, crawl spaces, culverts, storm drains, attics, chimneys or under decks.
Solutions
Wegmans Nursery suggests controlling raccoons by ridding your lawn of the insect larvae they dig for. Microscopic roundworms called beneficial nematodes can be introduced to the soil to kill the grubs raccoons feed on. Though they will return looking for the food they formerly found, eventually they will give up. Beneficial nematodes are effective up to two years. Other solutions include screening spaces beneath outbuildings, capping chimneys, removing brush, placing tightly covered trash cans in racks, removing fallen fruit and nuts, installing an electric fence or hiring a professional wildlife control operator.