One main thing you need to remember when using estrous scents.

Other does do not want to be around a doe in heat. That is why many times does will run or turn away and leave when youare usingestrous scent. They do not want to get in the middle of bucks chasing them when they are not in heat.

If you are hunting a setup during the peak of the rut where does come first you may want to use a general attactant (non-sexual lure like Trail Bait, Trails End 307 ect.) to bring does in which will hopefully bring in a buck.

If you are hunting a setup where you're hunting a funnel, saddle, or ridge where trying to catch a buck searching for does this is the time to use estrous urine.