I'm replacing the lawn in my back yard and want to try and eliminate my
ongoing gopher problem. Is there anything I can do during the
killing/rototilling/planting process to help prevent future gopher problems?
If I wanted to place a barrier around the property, how deep would I have to
go and what material would be effective?

BTW, how can I tell if they are gophers or moles?

- Magnusfarce