I have never..ever...ever...shot a deer over scent. I had just about given up on them until some provinces banned the use of them (which is usually the best indication that they work). But I don't plan to buy any again.
I've spent a small fortune on gadgets and gizmos over the years; some were useful - most weren't.
My advice...do your scouting... Pick a spot where there is clear evidence of deer activity (the more recent the better), keep the wind in your face and SIT STILL!!!
When placing a trail camera don't just look for a well used trail. What you want to do is look for a freshly used trail off by itself that goes from a north facing ridge, thick forest, brushy knob or some other similar bedding area to a food source. Don't forget water sources. Especially in the summer months the deer need water so look for a good trail going down too a creek surrounded by thick cover and place the camera 100 yards up from the water source.
Scent control is very important...