This safflower has been genetically engineered to have a 40% thinner shell that leaves a lot less mess under your feeders. It also has a higher protein content, and much higher fat content that makes it more bird attractive while still keeping the squirrels away. * NutraSaff has an extremely thin outer hull - 40% thinner than regular safflower. * NutraSaff has 15% more oil content than regular safflower. * NutraSaff has 25% higher protein than regular safflower. * NutraSaff has 30% higher fat content (energy) than regular safflower. * All NutraSaff products are non-GMO (genetically modified). * NutraSaff is an organic, chemical free feed.