I usually have kittens around, and I also have "senior" cats as well as younger adults. It doesn't bother me in the least as to what any of them eat, the concept of lifestage foods is nothing but a sales gimmick. Cats have managed in the wild for thousands of years without special foods, and so have domesticated cats up till 15 or so years ago.

There is no need to use "lifestage" foods

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