In my experience, skunk's rarely spray in a live trap/box trap. My dad used to say it's because the box is too short, so they can't lift their tail high enough to spray, but we caught 100's of skunks over the years, and I can't remember any of them spraying. We'd just open the box and let them out (like boca said, roll it over and the gate fell open-he must have had some of the same designed cages we had!).