I feed mine Fromm. It comes in all sorts of great flavors with premium ingredients (with similar formulas aside from the meat, so their stool doesn't get loose) so he never gets bored of the taste! For high quality, it's not that expensive. A 3mo supply for $50. He was a VERY picky eater as a small pup (5-16weeks) but absolutely inhales this stuff to the point that I had to get him a special bowl to slow down his eating. :)
I feed my Puppy costco puppy food..She is really healthy and has shiny fur....
But is it bad?
I was surprised at the ratings being better than I thought they would be. You can check out all dog food ratings on Dog Food Advisor. Watch out for any that has corn for a 1st ingredient. The questionable ingredients will be in red.
I try to avoid corn at all, though I don't believe "grain" in general is necessarily bad. Knee-jerk response on my part, probably: I had a greyhound that was indisputably allergic to corn.
My concern with Costco's dog food (and just about every other major brand) is whether it's made in China. There's no quality control in China, and because of the way the economy operates, a lot of bribery and under-the-table stuff goes on. Hence poisonous toothpaste and dog food that kills dogs and explosions that level a whole district in a port city. That's why I make my own: even when a maker claims X or Y is "made in America," that often means "with parts or ingredients fabricated in China and imported to the US."
Raw, Prey protocol