There is a small animal that is digging a hole, not a tunnel, about 3 inches deep next to the lawn/garden edging. Looking for an idea as to what it is and how to get rid of it.
What Animal Is Digging a Small Hole Next to the Lawn Edging?
This article should give you a better idea of what you're dealing with. http://icwdm.org/inspection/GroundHoles.aspx
You could also contact the county extension service, who probably have information on specific critters in your area and what to do about them. This link will help you locate the nearest one: