yeah i know what kinda scent that the bucks leave above a scrape....its called pre-orbital scent. however if you're asking because you want to make a mock scrape and use pre-orbital scent on the licking branch above the scrape, i don't believe that anyone has been able to preserve that scent. now if you're asking what scent is put into a scrape dripper above a scrape, all ive ever used is buck urine, or doe estrus urine. tinks 69, buck stop 200 proof, buck stop rutting buck, pretty much any commercial scent will work.