As a long time member of the Wild Bear club, I don't think urine affects deer at all. I'm not sure about taking a crap out there, but I don't think they would go whacko about it. I thought the thread was going to be about the what if you gotta go and don't have any Charmin with you. I usually have 4 or so sheets of Bounty paper towels for those emergencies and also if I have to mark a blood trail. If I forget the Bounty a handful of long grass folded in half works well, and Longleaf pine needles folded in half will substitute.