Bobco...all mammals have the same basic process to extract as many minerals and vitamins from our body. This includes the kidney..loop of henle (acsending and descending) and also misc. tubuoles that our "waste" goes through so that any needed minerals, salts or h20 can be xtracted for our use. Once we take out all we can then it goes out of our body as urea....so the only differences in us and deer are any other minerals we may have eaten and that our body doesn't need so we get ride of it in waste. again this is a small percentage of our waste. something to think of is that urine coming out of our body is sterile. Now for mating there are other chemicals in females or males during the mating season ie estrogen or testosterone that are in mass quanitities and become removed from the body viaurine,this is to let the buckknow that the femaleis ready to be mated with..
Please let me know if that helps or if you have other questions...

I guess explaining where urine comes from really doesn't help me in understandingwhy there isno human scent in our human urine.

Ok let me try again...So you would agree with me that deer can smell better than us..yes...ok, the process i described basically said that what comes out of us different then deer would be sweetner, alcohol or other chemicals that we have no other need for. If you want to know about smell yes our urine would smell somewhat sweet or like alcohol if you just had something sweet to eat or drank beer etc. The amount of that in our urine would be very small so you judge for yourself......if you take say some vodka and put in a glass say 1/10 a cup of vodka and then 1/10 a cup of sugar with water and something acidic thatDOESN'T SMELL (urea doesn't smell) ..( i can't think of anything off the top of my head) then try and smell the cup to see if you can smell the vodka or sugar....logically the answer would probably be no because it is dilutted so much...but if you ate for dinner the night before a gallon of ice creame and then three donuts that morning and went pee then there would be an excess of sweetness in your urine and it would probably smell somewhat sweet....but very little...and also you have to remember would deer relate that to danger....and like i said before urine is STERILE when it first comes out of our body......if you want your urine to smell like nothing...drink lots of water before and during the hunt...this will dillute all of your urine and i would almost guarantee that there would be no smell......to test it drink a pot of coffee and pee...it smells like coffee....drink a gallon of water and pee...it smells like nothing...
Let me know if that helps at all...

I go right out of the stand. I've evenshot does and a few small bucks after urinating earlier.

I even take things a step further. I urinate around my tree stands several weeks before the season starts. I've taken deer from those stands also.

I figure the deer wiil get use to my smell the same way they would get use to a ground blind. After a while they don't pay attention to it.

I even shot a spike while squatting over a pile of crap one time. Shot it with my pants down and all.

I was still hunting during the archry season, when I couldn't hold it any longer. As I was squatting ther, relieving myself, I looked up and saw a spike about 70yds. away watching me. It must have been curious and had to investigate. At 30yds, it went behind a large oak and I drew my bow. It came out the other side and stood there. I double lunged it as I knelt over my pile.

"I go right out of the stand. I've evenshot does and a few small bucks after urinating earlier.

I even take things a step further. I urinate around my tree stands several weeks before the season starts. I've taken deer from those stands also.

I figure the deer wiil get use to my smell the same way they would get use to a ground blind. After a while they don't pay attention to it.

I even shot a spike while squatting over a pile of crap one time. Shot it with my pants down and all.

I was still hunting during the archry season, when I couldn't hold it any longer. As I was squatting ther, relieving myself, I looked up and saw a spike about 70yds. away watching me. It must have been curious and had to investigate. At 30yds, it went behind a large oak and I drew my bow. It came out the other side and stood there. I double lunged it as I knelt over my pile."

If there is one common theme to all this is that mature animals don't often get curious about human urine.

Thanks for the femal perspective Bamahuntress.Have daughters and need the help.
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I think I get what you are trying to say. That there are scents in our urine that will make them unique, however, a deer would probably not be able to associate that urine with a human, correct? There is nothing in it that would make them become arroused. But the deer can associatehuman sweat and dander scents with humans, correct?

I believe this is why some hunters become vegetarians while hunting. A lot of people believe that deer can tell the difference between a predator and non-predator only. There are no assiciation between type of predator.

And I understand what you are saying about the coffee example. There is a guy at work who only drinks coffee. You can always tell when he has been in the bathroom.

But them let me ask you this. I have heard hunters talk about eating garlic the day befort hunting and worrying about the smell coming off their sweat. Why would they be concerned, unless it makes them sweatt more then normal? And should they be concerned about urinating around off of the stand?

Oh, and thanks for being patient. I claim to be no expert in this area, and never thought to think about it much. But I am curious.

Hey Bob, I sent you a private email and wanted to make sure you got it...if you happen to check this post again..

I used to believe the hype but not anymore.

Bobco, I promise you I'm looking for that study... I promise you; it's a scientifically-conducted study, and the results say that your statement that I've bracketed in quotes would most likely hold true.

I e-mailed the editorial staff of Bowhunter today in hopes they can point me directly to it; I've got like five years' worth of three different mags to look through to find it!! (Bowhunter, Bowhunting World, and Petersen's Bowhunting). I requested help on a different thread in this forum, and it appears people remember reading about it in Bowhhunter, so that's the one I'm going with...

Now, I'm sure the bucks are detecting pheromones from a doe in heat differently, but -- from a pure urine standpoint -- I don't think they can tell.

I just pee straight out of the stand...urine is urine to deer.

They can't tell whether it's human or coon or fox as far as I can tell.