Lisa, I used to live on the edge of a canyon where skunks were prolific (and an old lady fed them cat food every night
If the peroxide doesn't work, we in that neighborhood all used inexpensive heavy hair conditioner. Tres Semme, Garnier, Herbal Essence. Get the stuff for dry damaged colored treated hair. Apply really thick and leave on about 15-20 minutes. There is something in the heavy oils of the conditioner that breaks down the skunk oil. I've never figured out what it is. But my dogs were skunked so often, and well, with this treatment, they got salon results at an affordable price!
Hugs to Indy!