M.. we have a family of groundhogs who have had run ins with Mz Logan and haven't been back in our yard, but our neighbor's.
I don't see hide nor hair of them in winter.

If you call a local SPCA, they should be able to give you a name of a Game Warden. That's how our neighbor's got rid of about 8 of them a few years back. BUT... the trap also catches chipmunks and possums and other local critters. The warden would NOT release them because they were already caught (my tears didn't help) and unfortunately, he does not release them because they will inhabit some other place. I need not tell you what he does..

My hairdresser called the local county municipal office. For a few $$ he got a trap. He wore heavy duty gloves and drove them to a local park area..lots of trees and ponds and food etc.
Best way to go. Nature will take care of itself..IMO