[Pocket's Mom]

Hi All
My first day and 2 questions. My York scratches a lot around his muzzle..My vet has put him on York-P Tablets which is a form of steroids. I give him 1/2 a tablet a day. When he comes back from the groomers he doesn't seem to scratch until a week later...I'm wondering if I gave him a bath weekly do you think it would take care of this scratching, it's rather dirt around his mouth as opposed to allergies? He now weights 13 lobs. and I'm sure the steroids are playing a big part in this. If you think this would help what kind of shampoo is the best? I know the steroids are not good for him and really want to take a different course of action.
Thanks
Pocket's Mom