Whenever i shoot a buck during the rut or prerut,i always cut off his tarsal glands and if it didnt empty his bladder i drain it as well.Do this on does too. The pee only lasts for 4-5 days depending on temperature.The tarsal glends last a long time.I have used this for a long time and it has worked quite well.If you dont get a deer try to steal your buddies stuff.