I have had Wacha on a small (free!!!) bag of Lamb and Lentils for two days that I got when i bought a big bag of Beef Frittata. He is loving it and it seems (could be all in my head) that his coat is already softer. He poops are great. What I am afraid of is the russet potato in the Beef Frittata. The more I read the forum, it seems if everyone LOVES Pork and Peas. Should I return the unopened bag for something else?