By definition, grain - free recipes do not include grains, and because gluten is found in grains such as wheat and barley, these recipes are naturally gluten - free! (dishbydish.net)
As a grain - free formula, dogs that have sensitivities to things like wheat and barley might do well with it. (happypetsnow.com)
Products made with rice, millet, and quinoa are very popular as substitutes for wheat and barley based products. (foodforlife.com)