John,
Pour a few cups of laundry detergent in the hole, then turn the garden hose on, slow to medium pressure (you aren't trying to drown them, just encourage them to move, the soap will make them understand this isn't rain...).
The idea is to make "home" no longer comfortable, may take a couple hours if the tunnels are large, or the soil is very dry.
Block the holes after they have left.
If they return after it dries, they'll be really clean

but you'll need to repeat.
Breeding season is here...they want/need a safe dry place to raise their young.
Rob
PS. Shooting them will solve the problem, but more often than not, they "let loose" in their final moments, head shot or not.
In my experience with 15 of them...
Waiting for "someday" will leave you on your deathbed wondering why you didn't just rearrange your priorities and enjoy the time you had, instead of waiting for a "better" time to come along...