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It's true, not all dogs respond to immunotherapy/desensitization, but my dog had excellent results after seeing a dermatologist and being tested. She hasn't needed to see the regular vet in over 3 years and has not needed any prescription meds.
Of course she is on a natural diet, fish oil and other supplements. No vaccinations.
The raw bones didn't work for her, she would eat the ground up bone material and it upset her stomach. X-ray showed calcified material in her stomach and colon, luckily it passed on it's own. She likes Nutrisca dry as a base food.