I have found that the most effective bait can be fresh dirt and salt! something about deer just LOVE fresh dug up dirt. My favorite setup is a creek or canyon bottom along a feeding /bedding trail and in a good opening go dig up about 5 square yards and in the middle of this take post hole drivers and bury salt about 6 inches deep with a little seen from the surface. it should look like pigs rooted up the spot when your done. if needed i can do this and show pictures