When my one cat was having a hard time with dry foods, the vet told me to get something the most simple kind of food available.. one without all the additives and stuff to help this, that and the other type of thing. I changed over to California Natural Chicken and Rice, and they all loved it.

I use Nutro Lamb or Chicken now, and they all seem fine, but I am also down to only one who had the sensitivity to the food. The others seem to eat anything you give them.