In 20 years of living at our current residence, I've never seen all these 2" round holes all over the yard. They're everywhere! Over the years, we were becoming overrun by moles/voles. This year, I've not had one tunnel in the yard, but these round holes are everywhere. Anyone know if these might be snake holes, thus maybe the reason I'm not seeing any moles/voles? I've heard quite a few others saying they're seeing a lot of black snakes this year.