I've shot so many deer with a cigar in my mouth it isn't funny. Last year we had one walk right behind the sight in target on opening day at 70 yards with 6 hunters standing around a picnic table with 5 minutes of shooting light left all with beers in hand. (it was a mad scramble for the guns but......we all ate tenderloin that night). The 2 days before we must have unloaded 1,000+ rounds out there. I can see scent control for bow hunting where close means CLOSE!!! but with a rifle it's pretty much dumb luck or perseverence....spend more quiet time in the woods than the next hunter and the deer will come.