Dirt Hills in Yard

Question

I have dirt hills in my yard, like ant hills but the dirt is thicker, not fine like in ant hills. What is causing this? Is it grub worms? Help, they are everywhere!!

Answer 1

There are many things it might be. This article may help you identify it:
http://www.clemson.edu/extension/hgic/pests/plant_problems/hgic2364.html