Googled for info and will be going with the boiling soapy water in the hole method
Considered the Plumber Khan method - kerosene in the hole followed by a match.
Considered the Paulie method - hiring a professional, then wearing a winter parka and football helmet while watching from inside a locked car.
Considered the 32Green method - no real plan, then a trip to the hospital.
A skunk ripped up one, so there is a ten inch wide hole at top. They can all come out charging at once.