Well, this is a long shot..but if you want it gone (as in moved out instead of taking a dirt nap), visit a local pet store that sells ferrets and ask them (with a crazy look on your face) for a garbage bag of ferret crap and urine soaked litter... Spread it around your place or the holes..
I'm guessing the rodents will move along willingly instead of tangling with a 'weasel' that has 'mysteriously moved in'.
I know, call me crazy
