They may have damaged the turf grass, but don't panic. They were very active this winter because with the deep snow, there was no way a predator could get to them. Voles are small rodents related to muskrats that look like stocky mice. In contrast, mole tunnels are several inches below ground.
Moles eat insect grubs and earthworms, while voles eat vegetation.
The voles eat the crowns of grass plants and can cause substantial damage. But the destruction will be difficult to assess until the grass really greens up, Ziomek said. As soon as the soil dries a little, get out and rake the area. Put down some lime to release nutrients in the soil and wait to see if the grass responds. You may need to reseed small patches of grass.