Rakk fuel is made with premium minerals, vitamins and attractant to maximize your buck’s potential. Our mineral is formulated for total herd health and is also beneficial for fawns and lactating does. We have been researching and improving our mineral for almost twenty years. the low salt content, added probiotic-prebiotic, a two-to-one ratio of calcium to phosphorous with its specific blend of minerals and vitamins is formulated to improve immune systems, maximize antler growth potential and optimize total herd health. heaviest consumption will occur from early spring until fall.