I fed Science Diet for years. Then I started feeding Innova and within about 3 weeks I noted that my cats' coat had become sooo soft and downy, they pooped less, and their skin no longer had "flakes" coming off when I combed them. How cool is that!
They free feed and they were "older cats" by then but both stayed a perfect weight even though they are indoors mostly.
About 2 months ago, I started them on EVO. They love it! Their poops are even smaller. Yeah! I've done a lot of asking and talked with the sales person for the company. They said that the only possible problem is that it is so high in protein it could cause kidney stress in cats who already had kidney problems , including and especially "older" cats. I checked with my vet who approved it for my 14 year old male and 7 yr. old female.
going to the http://www.naturapet.com
website which someone else posted is a real education about "what's in the food." If I would, :lol, I would! feed them a "natural food diet." But they won't eat it, and the one time I did make the effort you would have thought I was trying to poison them! I know it could take awhile, but I live where it's hot a lot and I don't have the routine or patience to worry about the natural food..and I don't cook for me,..so it's unlikely I would maintain cooking for them.
As to some of the brands, including Purina and IAMS, they are now owned by Proctor and Gamble. Check out the info posted by PETA (Ok, I know, they are radical, but the pictures are there, the letters are there)...about the way they mistreat animals. It will make you pretty sick.
As to Science Diet, their parent company makes foods specifically for medical conditions,...but IMO, if a cat were fed either natural food diet or the EVO with the low carb count and natural preservatives, they would be less likely to need the special diets from Hills/Science Diet.
The price initially of the Innova is more than grocery brands, and the EVO is more expensive than that. But the old adage, you pay now, or you pay later is good to keep in mind. With good nutrition, your pets are less likely to need expensive later-in-life vet care. And a few cents a day to keep my "kids" with me longer is a small price to pay, and I am convinced they are doing well because of the food they are now on, even though they spent thier early lives on SD and IAMS (which used to be a much better food than it is now, IMO) .
I'm new, are we allowed to post IMO?