Unfortunately I don't have an old bag of the Natures Variety Prairie. I only have the older Instinct bag. I originally thought maybe the formula had changed, and that was why I checked their site. They say that it hasn't, that it just the manufacturing process. Not sure what is true.
I looked up the Orijen food. I would have to order it online. I know that it can get kind of expensive ordering dog food, because of the shippping weight.
I don't think Haley could take the Prozyme. For some reason, she poops in the house during the day when I add digestive enzymes to her food. I can't explain it. I add probiotics to her food every day, but any time I've added something or given a supplement with digestive enzymes, she leaves a "treat" for me. One good thing about when she did it was that she always went in the bathroom right in front of the toilet. It's like she knows what the bathroom is for. Now if I could only train her to open the lid, go in the toilet, and flush it!!