Squirrels are constantly digging in the soil for acorn deposition and retrieval, one supposes that they must run across the occasional grub or two. Grubs are one of the highest nutrition and calorie-containing foods to be found when you're lost and starving in the woods.

What are squirrels eating in my lawn?

Squirrels spend most of their lives foraging for food. They eat all kinds of nuts and seeds and a lot of those are found on trees and on the ground. ... Even if you don't have a food garden in your yard, the water from your lawn sprinklers and fallen fruit under the nearby tree would easily attract them to your home.

Do squirrels eat grubs in the lawn?

Raccoons will “roll-up” a lawn while searching for grubs and other larval insects. Skunks make small individual holes when they search for insect larva. Squirrels will dig holes when they burry food. ... If the spots increase in size and even join, these are probably grubs enlarging their feeding area.