My cat started overgrooming due to separation anxiety as well as having open sores on his skin which we found out to be a grain allergy,after changing to scrumbles his skin is finally healing, he's not overgrooming as much,he gets so excited as soon as he sees the pot of food and absolutely loves it,he's gone from being highly stressed and upset cat to being really happy,purring and even playing again, scrumbles is an amazing product and it has made such a difference