Hello, I just found this website and haven't read all the answers yet but I think I have something to contribute. We have a demodectic dog and at first went the "normal" vet way without any success. But knowing what I know now I am not the least bit surprised because if you checked into some other matters you will realize that this desease is caused by the traditional treatment this being vaccinations, dead food, antibiotics, deworming meds etc. So with all those so-called treatments we made matters worse for our dog.
Since some of you are very desperate I want to share the 2 articles which you should read at once. You will find out why nothing will cure this disease if you keep on going to vaccinated your dogs and do all those other things the vets are recommending. I want to mention that since about 20 years I am researching the subject of vaccination very thoroughly (mainly for humans but it goes for animals just as well) and know that a lot of people are just denying all the evidence that speak against vaccs and they are very outspoken and downright hateful and aggressive about it (talk about freedom of choice! ). So you have to make up your mind, whether you want to believe in facts or propaganda.
Anyway, here are the links to those 2 articles to start with:
Of course, there is a wealth of information on the internet. Once you get started you cannot stop. Look into both sides of the coin and then decide.