Baxter is a 7 year old Australian Cattle dog & weighs in at 45 pounds. We are looking at an indoor/outdoor dog. I take the dogs out everyday for a good mile to five mile walk this year snowshoeing for me with all the deep snow. The dogs find all kinds of protein in the woods & fields besides being fed their dog food. I am opting for a dog food with protein & rice. The sample doc gave us went well with Baxter. What gets me both dogs were itching & they are not related. The other dog Missy is a 2 1/2 year old Australian Shepherd. Everything came about when Baxter killed a manged raccoon. Besides that our sons black lab. rolled on the raccoon too & is around our dogs everyday & he doesn't have an itch problem. There are fox with mange & coyotes running around our area. I am going to ask about Malassezia-yeast infection. I don't know if the ivomec or steroids would take care of that. Baxter has had two steroid shots in the last 6 months. Maybe the dog food we feed both our dogs has something wrong with it? The lab eats it also when he is here. It is a process of limination & we will try the dog food next. Actually Missy is not scratching anymore & with the shots Baxter has stopped itching. There is a 6 week waiting period to see if he starts the itching again. I do feed some left overs & everything is pretty much homeraised around here. I will do some more reading & research that has been mentioned above.