Cover scents: I'm not big on these -- though, given my record of killing deer, perhaps I should be. It just seems difficult, at best, to accept that I will pick a cover scent such as raccoon, fox, "pine," cedar or "earth," that won't raise a red flag to a wayward whitetail. Even if -- as the theory goes -- the fox or other scent covers up my scent, how do I know a deer won't find the new scent just as suspect, and head in another direction? $10.
Clothes-cleaning products: Right or wrong, I'm big into these. I buy scentless laundry detergent by a deer-product manufacturer. And this year I also bought drier sheets designed to keep everything even more scentless while being dried. None of these is cheap. Expect to spend another $10. Or more.
Shampoo and other personal products: These make sense to me, as well. Obviously, showering before a hunt isn't always possible. What's more, a lot of bucks are shot by hunters who hole up in shacks where bacon and other smelly stuff are cooked up every morning, saturating hunters' clothes. But it's probably also true that an unknown number of deer are not killed by the same hunters because they are too easily detected by odor-savvy deer. In addition to shampoo, hunters can buy scentless deodorant, mouth spray, even foot deodorizer. Buy a sampling of this stuff and expect to drop at least $20.
Super duper clothes that claim to hide a hunter's scent: Having no firsthand knowledge whether these (at times controversial) products actually work, I can't recommend or argue against them. If you've got $200 to $400 lying around and want to give a new set of outerwear a try, go for it. I'm just not that comfortable spending that much -- in part because I think I can make up for my lack of high-tech clothing by a) properly placing my stand, b) exercising reasonably smart hunting methods and c) depending on dumb luck.
Which brings us to a summary point:
Lots of deer -- perhaps most -- are killed by hunters who buy none of the products described here.