I have teddie on Natural Balance sweet potato/Bison and he seems to be doing great. Because it is no-grain I give him carrots (organic), green beans, and several fruits to counter the imbalance. No eye boogers here...no tear staining either.
There are so many great foods out there, we had trial and error on 6 bags before we found this one. I am still not convinced we won't have to try something else either...