My dogs have been itching for a few months now, but have no hair loss. We took them to the vet and had skin scrapes done, but they found nothing although the vet said it is hard to see the mites. We concluded they had some type of mite and they were given shots, a chemical dip and later an application of Revolution. The itching seemed to stop for a short period after each treatment, but has come back again. I am looking for a treatment that doesn’t have chemicals because I am afraid all these chemicals may do damage to my dogs. Defendex is an all natural mite shampoo, but the question is does it work? It is expensive so I’d love to hear a review from someone before I buy it. Thank you!!!