Find a honeysuckle patch or a place where there is a couple of good sized white oaks close to some cover and fertilize the honey suckle or the oaks (around the drip line) now and again in the spring. You will make them produce more and be more succulent to the deer. Just remember, if you stink up the place too badly by over-hunting it they won' t hit it and you' ll think it doesn' t work.