Has anyone had to deal with skin mites on their dog? If so please share your experiences. The dog I rescued from the shelter had a little bald patch on her head and the groomer recommended I get it checked out. She was diagnosed with mites and has been given invermectin for two weeks and then has to go in for another check. The vet said it's common in puppies but that it's a long process to get rid of and that I have to be patient. Has anyone dealt with this sort of thing before?