Either a mask—or nothing. Though the "nothing" usually occurs when I lose or forget the mask.

I too have killed deer without a mask—but I've also been busted on many occasions without it.

Back in March, I had a few friends from GA come up to IL to scout some areas of Shawnee that they want to hunt this coming season. On the second morning, myself and one of them set up along the edge of a grown up field where we had seen 7 deer the previous day. The other member of the group set up about a 1/4 mile East of us. Later that morning as the other guy was moving to our location to meet up with us—he got to the treeline at the edge of the field and stopped to look for us.

Needless to say, he had no problem spotting us. He could see the "glare" of our faces from over 90 yards away.

For what it's worth, we were on the ground—so it may very well not have been as noticeable if we were in a stand—but from the ground, it was extremely easy to locate us.

After that, I decided I'll not "skip" the mask in the future. Every little detail counts!