We don't have skunks here in Australia! No porcupines either, which is just as well because I'd probably go poking my nose in one!
It’s not toxic, but you don’t want them eating it and getting sick.
Are you sure? Hydrogen Peroxide is definitely toxic! I can't imagine the baking soda neutralises the toxicity?
RE: How to De-Skunk a Dog: I’ve Been Doing It All Wrong