Supplemental feed works great. But if you want it to work, then you have to do it right and not take any short cuts. The problem with "doing it right" is the fact that it starts to get expensive and is very time consuming. We use Lyssel & Eckel and Bode Feed. But for the average guy with a small tract of land I would recommend them planting year around food plots unstead of supplemental feeding. Plant some chicory, Tecomate lab lab, soy beans, cow peas, etc. do your home work and find different plants that produce 18% or better of protein.