Just maybe!! I don't know first hand how well these work
Yard Gard Electronic Pest Repeller - YouTube
If you have a building they can get under this does work!! for sure
Keep Skunks Away Christopher James Unsolicited Advice - YouTube
I have (and I am sure you have) built a simple box trap, Made to catch Rabbits, but I remember catching more skunks then Rabbits, it sounds like you have a family of skunks near by so this would be another way to get rid of the pests family one at a time ..