My personal experiences I have had bad luck with urine type cover sents. I have been using fresh earth type sents for the past 5 years, as some guys have stated before. I had 3 does walk up behind me when I was about 10 feet off the ground climbing into my stand. They were within 15 yrds of me and never spooked. They finally just walked away. Also make sure you breathe through your nose and not your mouth. Just my personal experiences....Good luck.