I agree with all of the statements above but I'm going to go in a different direction. I'd double it up. Use 2 drag lines and apply doe in heat urine to one and buck urine to another. I'm a Code Blue fanatic but its not the only thing that works. I also like to hang some of each on scent wicks around my stand. If the dominant buck comes in and smells another buck tending a doe in his territory, he's gonna get upset and come investigate. Of course having a lot of does to every buck can lessen the effects here. I've had good success with this on public lands but I try to avoid calling because a lot of people here do it.