I will never feed to my cats or dog;
Iams, Beneful, Friskies, Whiskas, Diamond, Blue Buffalo, Kirklands...
I think that's it..
Brands I have fed and will likely not go back to though;
Authority, Simply Nourish, GO (dog food)
We feed the dog Merrick, and the cats Now. I really like these brands and my animals have done really well on them. My eldest cat used to urinate frequently around the house, takes daily medication for pain and has hip problems - on this food she's not had accidents around the house, and has been able to take a break from her pain meds (which act like a sedative) and she's a completely different cat. She'll cuddle with you again, sleep with you again, hop up on the cat stands again, she's playing again - she's taken a turn for the better and I strongly believe it's because of her diet.