I've been following your posts, too. Dublin is also a scratcher, (though not as serious as Lexi!) and I haven't been able to isolate the problem yet.
I've tried different foods and supplements, but nothing has helped. I've been using CC products and Cowboy Magic since they were so highly recommended here, but they haven 't done anything for the itching. (Even the Peace & Kindness hasn't made a difference.)
His coat is soft, clean and shiny, but he's still scratching! BTW All of the above products have had great results with my other dogs, but none of them have ever been scratchers!
Guess I'll be going to Pet Smart tomorrow. Sometimes I feel like I might as well just sign over my paycheck to them!
Thanks for sharing, Tricia!