I'm a Science Diet "nutritionist" had to take their class for work. It consisted of 8 hours of corn is good, science diet is the best, feed that and it will solve all of your pet's ills. I don't feed Sci Di and my dog and cats also get raw.
A bunch of Science Diet people came to our store, some from out of state their head hanchos. They asked me what I fed my dog, I told them we were having problems finding the right food because he was a chronic vomiter and had diarrhea a lot. They suggested Science Diet Sensitive Stomach. I told her that I had tried a 5# bag of science diet once and my 1 year old herding breed dog got constipated half way through. I asked what I should do then? She didn't have any suggestions. Guess they don't know everything (anything).