We can not guarantee that animals that are fed grain or commercial feeds such as rabbit pellets are GMO free. Lamb and beef are grass feed and Springer Mountain chickens do eat a pesticide free, vegetarian diet of corn and soybean without the use of antibiotics, growth stimulants or hormones, or animal by-products. The only way to insure GMO free is to purchase certified organic feed which would triple all product costs and make it not affordable to the average customer. GMO is a controversial subject but research indicates this is not a concern with animal feed. Please read this link for more info here.