Steve over at World of Okonomy had an uninvited resident recently. He emailed me how he got rid of this cute but smelly pest.
"Our neighborhood has tons of skunks. I've had one (or more) living under my shed forever (they love the compost pile! One bad thing about composting, no one tells you.) That's OK...you just have to be aware at night. I never go out without a flashlight. But recently, one has taking up residence in my crawl space (skunks need only 4" of space to squeeze into a spot) and has left my house smelling of skunk every morning (which open dishes of white vinegar eventually will dispel.)
I asked around. Skunk removal is close to $200! So I did some research. I prepared all this in advance in the daylight (skunks are nocturnal.)
My lure: A bowl of rice crackers and sunflower seeds. Wet cat/dog food is the best,but I was determined not to pay a penny for this. Also, the seeds/crackers have the benefit of being noisy.
I checked the bowl regularly during the night. Around midnight I could see that he had rooted through the bowl, so I knew he was out. I had an arc-lamp that I checked under the house to make sure there were no babies (a mother would have killed herself trying to get to them.) I sealed the crawlspace up with double layers of chicken-wire (galvanized wire is the best) making sure I stretched it out in front of the crawl space so he could not dig himself back in.
I finally soaked an old pair of my shorts with with ammonia as a stinky message back that he was not welcome anymore.
Seems to have worked!"