Smilla sensitive, does the trick!
I have an itchy chap who has been on the Hills d/d. If he has anything else (even a couple of treats) he takes chunks out of himself scratching.and washing. Recently he'd been eating my other cats food with predictable results. I tried this and he loves it and skin is much better. both cats their hills in morning (other cat has renal as a precaution, he has sensitive) and this in the evening and so far they are wolfing it down. She is a fussy lady as well so it's impressive!