Voles can typically be found in garden and mulch beds. 3 to 9 inches in length, including its hairy tail, voles look like a mouse though they are a bit shorter and chubbier. They can be particularly harmful to yards and gardens as they thrive on small plants and roots and have been known to strip the bark of trees (known as girdling) in search of nutrients below. Like other rodents, they can reproduce extremely fast, but are usually evident only after they have destroyed a garden, trees or shrubs. Like moles, they do produce a series of runs, or tunnels, and many exit holes throughout the area they inhabit.