It depends on what part of the season it is. In early October if you bowhunt, my guess would be to just stay as scent free as possible. When the rut is about to kick in you can start using estrous to possibly catch bucks scent checking for the first does to come into heat. Round here that time is usually Novemeber 1-November 10 give or take a couple days. Piss works as well as a curiosity scent.. good luck