Hi Tyla-
If you decide to use Zignature, two things you must consider. Zssential is the worst one to use if trying to determine if there is a food allergy at play since it is a multi protein formula.
Also several customers at my work and folks online are having their dogs develop crystals in the urine while on Zignature. One customer of ours that runs a rescue used Zignature for her 4 personal dogs. All developed struvite crystals.
Also as a word of warning. I did the same thing you are doing when my problem child dog was a pup, now he gets violently ill on any food with exotic meats and most grain free foods because of the peas.
