If you wake up and your lawn is full of small (1”-2” diameter) conical holes you can be sure of two things. One is that you have an infestation of grubs in your lawn. Secondly, a striped skunk has done you the favor of decreasing your grub population. Skunks are omnivorous, eating everything from snails and birds’ eggs to nuts and berries. In the summer, roughly half of their diet consists of insects. One of their favorites is beetle larvae (grubs), particularly the immature June bug larvae, which reside an inch or so beneath the surface of the soil. When skunks have been feeding under a pine tree, the circular motion with which they presumably dig the hole is obvious in the circular arrangement of the needles surrounding the hole.