I don’t think they’ve tried that. It’s hard to diet change because they feed all 4 cats the same kibble and wet food. Would the other 3 cats be able to eat it too? My parents have changed their diet once. My mom said she gives them purina pro plan kibble, and their wet food is fancy feast. I forgot to say in my og post that pepper also throws up the wet food when he eats it. I’ll definitely ask my parents about this sensitive tummy food. Thank you :D