Black Soldier Fly Larvae (BSFL) or Phoenix worms are a nutritious worm for your animal. They are naturally loaded with calcium, hence there is no need to dust before feeding. Comparison of calcium content: BSFL 874ppm ~ Crickets 345ppm ~ Superworms 124ppm ~ Mealworms 122ppm Nutritional Analysis: Protein 18%  Fat 14%  Fiber 3%  Moisture 61%  Ash 4%  Calcium 874ppm