Have you tried antibiotics first? If not, I would start there. "Veterinarians commonly treat proteus bacterial infections with the antibiotics enrofloxacin and gentamycin. Because these antibiotics can cause stomach upset and are not recommended for dogs with kidney disease VetInfo suggests that homeopathic treatments of berberis vulg, cantharis and staphysagris along with the anti-bacterial drugs Zeniquin and Naxcel can be helpful. Giving your pet extra fluids also helps flush out the bacteria."