You can buy Yucca and put it on the kibble or in his drinking water. Some products for “fresher breath” contain yucca and also products for joint mobility contain yucca. OR you can give a probiotic (preferrably one that contains multiple strains of organisms) supplement with his meals (capsule, powder, yogurt, kefir). Probiotics help maintain a healthy gut which usually results in less gas. Digestive enzymes will help also to help breakdown food particles since undigested or not completely digested food can cause gas and puppies usually consume more volume of food so more to digest. OR use some dried parsley. I have small dogs so no input on food and they rarely have gas. I’ve been giving them prob/enzymes for a while (not everyday) and they eat a variety of foods and different forms of food. I like your list above. I was OCD like that when I first learned that dog food was not all it was cracked up to be. I’ve probably used about 20 different foods.
