I feed mine Chicken soup, but when I got Sampson he was on RC puppy, and like everything else, mine was eating it too before I got him completely switched over, and they were scratching like crazy and had the worse runny eyes, I thought somehow they had fleas(on advantage) or had a cold, until I realized it was the RC, well got rid of and after a week on Chicken soup no itching or runny eyes
I think it was the corn in it.