We have been using apple cider vinegar and borax mule soap. You can also Google favorable results using hydrogen peroxide and borax mule soap as well. It has definitely worked for many and has definitely helped our boxer's Demo Mange. However, not around her face (hard to treat area). Hopefully, you have gone to the vet for a skin scraping to confirm what type of mange your dog has. We just ordered products from http://www.petsbestrx.com/mange/ and we will be posting results on youtube and may even create a blog. I realize this is an old posting...but, if your pet is still suffering - I am hopeful this has been helpful to you.
Evelyn~