Amy,
I go through the same thing with Dusty. If you do switch to Natural Balance allergy formula dog food, use the venison and brown rice. Dusty couldn't stand the duck and potatoe and I ended up throwing part of it away since Dixie wouldn't eat it either. Duck has a very potent taste. Wellness also has allergy formulas as does Eukanuba if you have a hard time finding anything else.

Hope you figure it out soon. We still battle with it.

Candy