Poor doggie, some cases of demodectic mange can become quite severe and it is re-occuring. Demodectic mange can also be controlled by giving daily doses of interceptor! This can be very expensive if it a large dog, but a small dog it is fairly cheap. Your vet may even give you a little break since you will be buying it in a larger quanity. Since it is demodectic mange it will most likely re-occur throughout the dogs life & all those dips will be very expensive and more toxic since the dog will probably need more, so maybe looking into the shotsmight be safer for your dog. Also stress & poor diet can cause dem. mange to flare up so try your best to reduce the amount of stress & feed a good diet. Good luck!