I would spray my sets with that stuff when I first started. I dont know that it hurt, but I do know it doesn’t help. Not long after that I stopped using it altogether in the outdoors because I realized it was more or less snake oil.

I guide hunters, and a ton of them (more or less every archery hunter) bring and use that stuff. I don't know what exactly is in it, but I usually tell them they are just paying a high price for water in a spray bottle. My experience, if you are downwind of the animal they aren't going to smell you even if it has been a month since you took a shower, but if you're upwind they are going to smell you no matter what you do, you can have bathed in Scent Killer two hours before and they are still going to smell you. Good quality, clean boots will lower your scent, and various other things, but I wouldn't put anything on traps myself.

But feel free to do an experiment with some traps sprayed and some just clean and handled with gloves, then report back to us. You're going to anyways, so I would like to hear your results.

The sprays are mostly an anti-bacterial to keep BO at a minimum. Which they do accomplish. They're more or less baking soda (some odor absorption) and peroxide (anti-bacterial).

And lets remember, they're targeted to ungulate hunters, and ungulates don't have anywhere near the nose power (or brain power) of a coyote.

I think they work better at cleaning up "where you've been" vs fooling anything "you're not there."

I totally agree. Unless you take drastic measures, you not going to fool a mature buck or a coyote that is downwind. Look up John Eberhart. He says he can. That's a different story and topic. Anyway, Notice I didn't say that they were downwind of me. I said they crossed where I walked and did not blow up. My boots may have been the reason however if I was adding scent w/ the spray they would have smelled that and blown out of there. I don't know if it helped but I don't think it hurt either. Your right though, I'm going to do it anyway just to see if there is a difference. What's it going to hurt?