Free: Contests & Raffles.
Everyone you ask has a different opinion. I say the bottle cost what 12 bucks. What can it hurt you will never be scent free. I see it as reducing some of my stank trail through.
No scent cover, scent killer, scent lok clothing, etc etc products work 100%. I don't care if you bathe in and drink scent killer by the barrel, elk will smell you if you're upwind of them. I don't use cover scents, scent killer, or anything of the like. Shot an elk last year at 6 feet. Get in the wind and move in on them. You'll be better off than relying on some marketing pitch cover scent.
Marketing! all it is. You show me a elk hunter who hasnt sweated while hunting, your breath alone is enough to alarm any elk or deer if the wind is wrong PERIOD! I sit in stands and have deer approach from every angle with 0 scent killers or clothes. One thing I do use and it does work is scent killer spray on my boots to cover my trail into a stand for whitetails. Ive watched mt bucks come out of their skin when hitting my trail in. I have sprayed my boots and watched deer walk right over the trail and not flinch