I met a couple with a young cocker a few months ago and they were complaining about him being very hyper.
I asked them what they were feeding him and shock, horror, you have guessed, Bakers.
I suggested it may help if they try another food and they went to PAH and Jolly's and asked for their advice.
Off hand I can't remember which food they actually decided on but when I next saw them they were very grateful and said they could not believe the difference in the dog and commented it seemed almost over night.