My bully was on Fromm pork and pea for at least 3 months. His tear stain was gone but the itchiness was still there. Unfortunately, he starts to show allergy signs again this week, such as, vomiting and head shaking. So this week, I'm switching him to Go! Natural Turkey grain free and potato free. I'm keeping my fingers cross. If this doesn't work, he might be eating home cooked meals or raw as the very last resort. It has been a very frustrating journey.
For awhile, he was on California Natural kangaroo which he did very well for over a year. But he started vomiting and that's when I started switching to Natural Balance with limited ingredients but with no luck. Then Fromm and now Go.
Good luck in your search.