Another good tactic to go along with the dripper is to make a licking branch. We use 3/4" to 1" manilla rope and hang a 2ft section (on average) from a branch. I then saturate the end of it in my pre-orbital lure called Apparition Scents - Nightmare. The deer have been really taking to it this year, they seem to like rubbing their head and antlers off the rope quite a bit. The rope also holds the scent a lot longer rather then a cotton wick or just applying the pre-orbital lure to a branch.
Just another way to have fun with the camera!!