Just wondering.... How many people, utilize scents or scent control when rifle hunting elk.

I know elk hunting is very mobile, but is the use of cover scents or scent lok effective?

I have elk hunted for the last three years, the first two I never used any scent control. Last year, we took some elk attractant and wore scent lok suits. We seen elk every day, and killed out on the third day of season. Maybe luck, maybe not. I just wonder how many other people believe in the importance of scents.