Completely eliminating human scent is impossible though the manufacturers of scent blocking clothing and sprays and such will do their best to fool you into thinking otherwise. The best way to control scent is to do what D80 suggested. Scent free washes for clothing and body work well in REDUCING scent. NOT eliminating. You have to learn to play the wind. Find the deer trails and direction of usual travel then make sure you are downwind of the deer. Set up multiple stand locations to accomplish this. That way you can get into whatever stand the wind direction dictates. If you can't set up multiple stands and the wind is in the incorrect direction, then don't hunt there. A whitetails nose is it's first and best line of defense. They trust their noses and if they smell something wrong they will go nocturnal at worst, change travel routes at best. As I said in another thread, I've seen deer not even leave a 200 acre home turf after being shot at but if they smelled something off they have a tendency to bug out and go nocturnal. BUT, then again you have your curious younger deer that will investigate rather than bugging out. Those are the ones that get killed. The old smart ones, typically what most consider "trophy" age deer, are the ones that didn't fold to their curious nature and went with what thousands of years of instinct told them.