I am putting a link for your article here for you so others can easily access it:
https://truthaboutpetfood.com/hidden-from-pet-owners-vitamin-premix-recall/
This is why I like Dog Food Advisor. They - via the FDA (so I'm not sure what the author of that article is saying since the FDA was involved) - notified the public about the toxic Vitamin D levels back in December of 2018. I got an email about it from DFA too. (And the Vitamin D problem was one of the ones I mentioned in my first post on this thread.)
https://www.dogfoodadvisor.com/dog-...amin-d-discovered-in-several-dog-food-brands/
I agree about losing faith in dog foods, though. I lost it long ago when they had the melamine problem, but it was sealed for me a few years ago when it was discovered that some foods had euthanizing agents in them like barbituates, and pets died from eating them as a result. That's when I learned about rendering plants, again, from Dog Food Advisor. (Not going to post link here but please do google it.) It is hard to believe this goes on here.
There are even some problems with treats. I am very careful what I buy.
I am not sure what the answer is.