[pitlove]

Although internet rumor claims corn to be high on the allergenic scale, it’s truly not. As I said, the itching could have been from their coat drying out/skin drying out since the Iams maybe did not have enough fatty acids for them. I’m in doubt that it is related to a food allergy.

No I dont think you’ve ruined their GI systems, but you may want to consider a longer than 10 day transition at this point.