The deer hunting industry has become a lot like fishing. You can buy all kinds of stuff to fill your takle box, big or small. But in all reality you can probably be just as succesful with a cane pole and worms. If one is after mature bucks some of the sprays and stuff do help, and camo patterns have come a long way in breaking up the human form with Vertigo being the best IMO. The scent lok/blocker is very much over rated, again IMO. If all I wanted to do was harvest any deer I wouldn't buy any of it. But I choose to hunt and harvest mature bucks, and again I find that some of the stuff is very useful spending on how pressured the deer are. IMO you can't buy anything that will overcome poor woodsmanship. If you have good woodsmanship and always remember the basic's and build from there you will enjoy filled tags, whatever age class of deer your after.