Other issues.
A shiny coat, healthy teeth and gums, and litterbox odor control are all concerns if you live with an indoor cat. Most, if not all, of these issues can be addressed through proper nutrition found in Royal Canin products such as Beauty & Fit 37, Oral Sensativity 30 and Indoor 27.
Cats are very independent creatures who tend to take care of themselves, so it may seem reasonable to feed a lesser-quality diet because the cat doesn’t “need” anything more. But once you upgrade to high-quality, premium nutrition, you’ll see that your cat not only becomes more beautiful in coat and condition, but also more pleasant to live with because so many issues will be addressed.