I'm like you but...my dog was very ill for months. I had him to the Vet and a holistic doctor. They both were treating him for allergies. I was itching like crazy so I went to the doctor, he said you have mites, I have mites, my husband has mites, and so does my dog. I went back to the vet and she was like...Oh have him take this and he should be good, also I had to give him medicated baths. He had to take Nexgard, 1 pill. Mites are dead. Do you know what Nexgard is? Ivermectin My daughter has Lyme for 6 years, I have started her on Ivermectin so far so good. Lyme is a parasite, Ivermectin kills parasites. https://www.petcarerx.com/article/what-pet-meds-and-preventatives-have-ivermectin-for-dogs/1250