A hunter using deer urine to cover his scent smells like a hunter and deer urine to a deer, not just one or the other. The odor of decomposition has been known to change the composition of soil and can be detected by search dogs many years after the body decomposes down to skeletal remains. The deer’s sense of smell is truly amazing. Though not proven, it’s believed white-tailed deer can smell eight to 10 times better than people. Deer Scent Strategies: A very effective option for using deer scents during the late pre-rut, rut, and even the post-rut is to drag a scent trail leading towards your tree stand. I have been upwind of a couple of deer before and they defiantly did smell this product as their noses were all over the place sniffing the air. Simply us doe estrous on a drag system using latex gloves to keep your human scent off of it. So How Long Can Scent Survive? So with that said, the first and probably the best, rule of hunting is to get down wind. With thousands of scent receptors, a deer’s nose can pick up and sort out up to six different smells at one time. So they are pretty impressive. If the scenting conditions are perfect (humid with a light breeze), it can even be farther. Whitetail deer can smell at least 25 times better than a human with their 5 million scent receptors. While there is no research offering specific measurements of a deer’s olfactory abilities, Steve Ditchkoff, professor in wildlife ecology and management at Auburn University, says it’s estimated that a deer can smell at least 1,000 times better than a human. A whitetail has 6-8 cubic inches of nasal surface area compared to a human’s 1 ½ inches. But it is not a shock to the deer as it smells natural. Local deer can be seen re-entering the same area previously spooked with-in an hour or so. This has been my experience. A hunter using deer urine to cover his scent smells like a hunter and deer urine to a deer, not just one or the other. -- Chad Carl, Washington, Pa. ANSWER: Under normal conditions, a deer can smell a human that is not making any attempt to hide its odor at least 1/4 mile away. This means that the level of detail whitetails see at 20 feet is what normal human vision can … You can see why hunters are at such a disadvantage when they head to the woods. Every hunter knows that deer have a remarkable sense of smell, but just how well can they smell? Where deer and people mix on a daily basis human scent has little long lasting effect. But sometimes the wind shifts or the animal moves or the hunter is stationary and the game picks its approach. Don't Miss: 5 Things You Don’t Know About Deer Senses The wise deer hunter does all they can to remove or control human scent, but knows being totally scent-free around deer is next to impossible. The Long Snout. While cover scents have little effectiveness, the ability to reduce human scent with antibacterial soaps, detergents and sprays, anti-microbial Scent Killer, and carbon is proven science. Nose Jammer totally overwhelms the deer olfactory nasal system and overpowers an animal’s ability to detect and track human scent. I would have scent protection on stand, but not around the house. Research performed at Mississippi State University’s Deer Lab discovered a deer’s sense of smell can be up to 1,000 times more sensitive than the average human’s. Hunters who consistently tag mature bucks know how to beat a deer’s nose - do everything possible to reduce human odor and always use Mother Nature’s scent dissipater, the wind. By studying the physical characteristics of deer eyes, scientists estimate deer have 20/100 vision. The trade-off is that researchers surmise deer can see UV light — something humans can’t detect. 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