Head-Scratcher is a combination of multiple glands that deer use to communicate on a licking branch or hanging vine. Brian R. Kightlinger created this gland lure mixture, which Smokey McNicholas of Smokey's Deer Lures is making. The unique gland mixture is thicker and less viscous so that it won't run as much down the licking branch. 
I tested this product in 2023 on multiple farms with outstanding success.
 
The 1.0 oz bottle will last a long time because you only use a few drops on the licking branch or mock scrape. The bottle comes with a glass eye dropper. Be sure to check out Left In The Field Outdoors TV on Youtube for more videos. 
* I highly recommend using Smokey's Buck Interdigital with this product!