I am currently visiting family in Houston. The neighbor has 3 dogs (1 year old puppies) with mange. I am a colloidal silver user and I have my own machine. I am currently making up 1 quart batches for neighbor and they are applying to dog's skin and putting solution in their water and food. After 1 week, the skin is looking better and they are not scratching as much. Will be here 3 more weeks and will keep up with this treatment. If colloidal silver not available, I was also told that using just straight organic vinegar is also effective along with baby oil on inflamed areas.