Funny, the peroxide solution they mention is the same one I have read somewhere else to neutralize dog pee in rugs. If it works on nasty skunk oder, urine oder should be a sinch.
When I used tomatoe juice (many cans) on my lhasa the faint skunk scent remained with her for about a month and a half. She slept with me so that scent was right there. It smelled like burnt rubber bands. yuk.