My sons dog an American Bulldog suffered from mange, he did not know better and ran up hundreds $$$ while I was overseas. Anyway you know dad never knows whats best. Told him to give it to me for a week, while I went fishing in the Florida Keys. he was reluctant but did not know what else he could do. Long story short, dog bathed in Saltwater for a week. I would say the red was gone in 3 days and began to grow hair on our way back to Miami. Saltwater is a cure all, took care of chicken pox scabs as a kid so why not mange.