I had been losing the battle against the "ground squirrels" this spring. The final straw was when the 6 babies came out of the hole at the front door and ate all the Asian lilies down to stubs. Making a mess of everything, digging holes all over, pooping on the welcome mat. I read about using ammonia. I soaked some rags in ammonia and stuffed them into the holes around the house. It took a week of re-applying the ammonia and filing holes. It didn't kill them, but, they have stayed outside my ammonia perimeter for three weeks now.
Deb, you were right. They are ground squirrels - everyone out here calls them calls them gophers and I just assumed that's what they were. I looked it up, the Wyoming Game and Fish states they are ground squirrels, but commonly called gophers, and the rest of the article referred to them as gophers.