I will say this though. If Doxycycline or Metro don't clear it up, you probably need to go to the doctor. Albon also for dogs. Those are 3 things that I use all of the time and particularly for an animal that appears to be getting down or really infested with bots or infection. If I get an animal that is heavily infested with worms, when I de-worm them I give them a round of antibiotics to ensure they don't get infections. If one or a combination of those 3 things don't clear it up, you need a vet. ( I don't use albon for human beings only for dogs). lol