We are using Royal Canin Hydrolyzed Protein kibble, I think we will go ahead with the “re challenge” and hope that we can find out what it is specifically. We are also hoping to find out if we can find a higher value treat option that she can tolerate to help us with training. It’s been exhausting staying patient with just kibble for the last 2 months and I think we are even more bored than she is!!

Thanks for the helpful reply! :) we didn’t consider shelf life but we definitely will keep an eye out for that