I have known people to actually urinate in scrapes. I've seen pictures to prove the bucks were not alarmed in the least bit. When I have to relieve myself, I just pee off the stand. I really don't believe deer associate our urine as being human urine.I have had deer walk right by without being affected whatsoever after peeing. I even had one buck smell where I peed right under my stand and then relieved himself right where I did. Next time you need to relieve yourself while hunting, just do it, I don't think you have a whole lot to worry about.