The way I uthanize them is I throw a tarp over the cage and run a vaccuum cleaner hose from my exhaust pipe to the cage. About ten minutes later they're sleeping permantly. But the Pond soak cage system works just as well also.
And my previous post was written yesterday. Last night I left the bedroom windows open and sure as s*** Mr. Skunk visited someone nearby. Had to get up quick and close the windows in the middle of the night. I hate those guys.