I have had a skunk problem under my front porch for the last few years. Finally paid someone to come deal with it. He caught like four of the bastards and sealed the area off really well (the first time I sealed it off, it didn't work). Plus he's got a guarantee for his work. The worst part of the whole ordeal was coming home one day and your house reeks of skunk. You go outside, and don't smell a thing. But inside was a mess. All this from them marking their territory under my deck.
FYI, I don't know if animal control will touch a skunk. There is no animal control out where I live, so I had to deal with it myself. Also, it's illegal to relocate a skunk. You must kill it.
Oh, and one of my dogs got sprayed a few months ago and she still smells up near her face. I washed her with the anti-skunk concoction a few times, but part of it was just too close to her eyes and I can never get it off. I fucking hate skunks...