The best control comes from feeding animals a diet that does not contain synthetic toxic preservatives.
Comfrey tea can be use topically for dog skin allergies - cook a mess of comfrey greens, dilute the cool pot liquor down to a light iced tea color and pour the into the dogís fur. Comfrey is very powerful so donít use more than once a month and only when needed.
Bathing the dogs in herbal shampoos that contain citrus (d-limonene) and tea tree (melaleuca) will also help. Cornmeal dusted onto problem skin areas is also helpful, especially if the skin problems are fungal. See cornmeal for additional information.