I liked the Trophy Rock for a long term bait. I just saw some at Dunhams for $10. Mine lasted from April to fall. Then they came to eat the "contaminated" ground. But since WI banned baiting/feeding I don't use them. Now I do more mock scrapes and rubs.
I have used this and got very good results. I spray it on leafy green vegetation (natural browse plants in the area) I mix 4 oz vanilla, 4 oz water, and 1 oz almond oil together in a spray bottle.