Infestation of lawn with what appears to be mole hills.
Hello, and thanks for using the Ask an Expert System,
I cannot be certain of the identification of your pest from your description. I you may find the following publications from Penn State helpful. For a description of moles and how to control them [click here]. For a description and control methods on voles [click here].If you have additional questions you can contact your nearest Penn State Extension Office
Tioga County Penn State Extension:
Office Hours: Monday-Friday 9:00 AM - 4:30 PM