Like humans, a deer's available diet seldom supplies all the minerals, vitamins, and protein necessary for maximum good health and growth. While Imperial Clover, ALFA-RACK and NO-PLOW Wildlife Seed Blend provide a tremendous amount of antler-growing protein on a year-round basis, other minerals and vitamins may be unavailable. That is why, again like humans, it is beneficial for deer to have available a mineral and vitamin supplement on a daily basis. And that is what Imperial Whitetail 30-06 supplements provide.