It is not! They use less filler than most of the more popular commercial brands, but still a higher percentage than people realize. "Filler" being the material used to increase the weight of the product without actually providing nutritional value. We buy Blue Buffalo for our cats which is all dried meat and vegetable with no filler. At around $25 per 20-lb bag it's a lot more expensive than Science Diet but the effect it's had on our cats' health was almost immediately noticeable. And their litter boxes don't smell as bad, either.
It is not! They use less filler than most of the more popular commercial brands, but still a higher percentage than people realize. "Filler" being the material used to increase the weight of the product without actually providing nutritional value. We buy Blue Buffalo for our cats which is all dried meat and vegetable with no filler. At around $25 per 20-lb bag it's a lot more expensive than Science Diet but the effect it's had on our cats' health was almost immediately noticeable. And their litter boxes don't smell as bad, either.