Not uncontrollable, just on the wrong diet
I thought my troubled rescue pointer/lab cross would be impossible to train, but a behaviourist gave us sound advice and insisted we switch him to Burns immediately, nothing else would do. I was skeptical but she was 100% right, within 24 hours on Burns he'd stopped biting and destroying furniture, and calmed down to a point where we could start to teach him. Now he's a beautiful young dog with a bright future ahead of him. Thank you Burns!