Corn gluten meal is a source of plant - based protein which is of inferior quality compared to meat - based proteins. (dogfoodchat.com)
Please note that we do not mix with inferior quality black raspberry powder to create volume at inflated prices. (ellagic.net)
They are typically produced from inferior quality materials and undergo little to no testing which can result in higher rates of heavy metals and other contaminants. (k9nutra.com)