Nutro cat food is THE cat food you should feed to your cats. The 20 lb bag we have for our 3 cats lasts about a month and a half.  We use the indoor cat formula, and it gives our cats the silkiest fur i've ever seen on a feline.  Each of our three cats we got from a local humane society shelter and to say the least sometimes when you get a animal from a shelter their coats aren't as silky and shiny as you'd like it.  Within a very short time, their fur is so much smoother and happier you wouldn't believe the difference.  I've met other people with cats that use less expensive food with way...