I see this is a thread from last year, but the subject periodically comes up from time to time. I have never recommended that brand or
TSC. Some
TSC stores in particular, for whatever reason, have a bad reputation for moldy feed. In fact, the one time I decided to go against my usual refusal to buy
TSC products, I got exactly that, moldy, green feed. Perhaps the smaller bags have less chance to mold, I'm not sure, but the large bags are not something I'd ever buy again. It's too far to return them constantly. And it doesn't smell good to me, either. Smells like Purina feeds, which have a chemical odor, at least to me. Maybe Purina makes Dumor? I can't remember.
And as far as I know, Dumor is still vegetarian feed, not something for birds who are penned 24/7 as they are omnivores and vegetarian feeds do not give the best feather quality or a natural diet, requiring you to supplement it for best results. I do free range my birds, but I buy a 22% layer feed with good porcine animal protein still contained. And, no, they can't get "Mad Chicken Disease" as some ill-informed person snarked at me on my YouTube channel once. Eating meat is natural for a chicken. They'll eat each other if given half a chance. I just fed an ailing hen chopped up rotisserie chicken because she cannot have grain in her condition right now.
Whether birds do well on a feed depends on the breed (heritage stock need more protein, generally, and one reason is they are larger birds than most hatchery stock) and if they are always penned and it is their sole feed or not.