Well that would keep him where he’s needed!
I put a basketball sized rock alone over one burrow and it never was re-dug. I guess it wasn’t the main door. Probably why an old one behind and under the garage came back online. I peed in there about 3 times and never saw the critter again. Then I capped it with a couple concrete blocks.
One occasionally comes in to nibble some grass, but no of them live in our yard anymore.
Now I’m swamped with chipmunks.
Well, if the groundhogs come back, I guess the menfolk have a new job on their chore list :)