For some reason one of my dogs has taken to digging enthusiastically in one spot in the yard. Possibly something dead buried there?
I filled in the hole, twice, and he dug it out again.
So I filled it with gravel -- less fun to dig through. He still dug a little bit in it.
So I had a brainstorm. I peed all over the gravel, marking my territory. We'll see if that works!