A: The number of rubs on any piece of property is influenced by several factors. In our studies, we've recorded densities that range from less than 500 rubs per square mile to over 3,000. Obviously, the overall buck density has an influence. But study results indicate that the number of rubs correlates more directly with the density of 21/2-year-old or older bucks. A Michigan study found similar results and showed that young bucks made fewer than half as many rubs as older bucks, and they tended to begin leaving this sign much later in the fall. So a lack of early-season rubs at least suggests a lack of older bucks. Keep in mind, though, that an older buck or two may well show up in your area as they start ranging more widely during the rut.