Save the vanilla for making homemade ice cream. Been there, done that ..... waste. This was a rage among a handful of guys at our hunting club 25 years or so ago. I tried it too .. a couple of times. After a couple of seasons we collectively quit .... none of them saw any reaction by deer in the area ... adverse or favorable to vanilla as a cover or attractant. We probably moved on to some other useless scent gimmick !!!