Urine is urine and from the study I saw deer visited scrapes soaked with human urine and buck urine with the same frequency. They did so on these scrapes more than the ones soaked with doe and new car smell...that's right new car smell and they visited them the same frequency as the doe ones....what I learned, in scrapes I'd use buck urine and not doe urine and I wouldn't hesitate to urinate in a scrape. I don't however do it out of a tree....