i, for one, let it fly. i had a fence row that i used to pee at before i would go to my tree stand. one afternoon i had just finished lunch and a about 3 sodas so i REALLY let it flow. when i walked out that night i came upon a dandy buck making a scrape in my pee puddle. i about crapped. so, the next day i did the same thing, except in a diferent area and i went in a scrape. the next morning i hunted there and the scrape was twice it's origional size and steaming from buck useage. maybe it's coincidence but i doubt it. i actually try not to pee out of the tree but if i have to go, i just let it all hang out.