I give Koko her shot once a month. I hate shots myself but I have found that Koko doesn't even know when I give her the shot. The shot in combination to finding her the right non allergic food has her completely free of scale and dandruff. I hope the shots will help your dog. Give it time to work. It took several months before we say results. The Lime/sulphur dip along with the Etiderm shampoo helped clear up the lesions that she already had. These are things you can do yourself also.