Almost all wild animals will check out a new scent, and cover it with their own scent if they are territorial at all. Trappers use fox urine and catch bobcats, coyotes, coons, fox etc. Animals check out different scents, and it is natural to do so.
You really can't go wrong by pouring a coke in a scrape. If the scrape isn't smelling like the dominant buck in the area, he will take that as a threat, and saturate the area with scrapes and rubs marking his territory.
Deer spooking from human urine is an old wives tale. It is the human presence and intrusion into core areas that they are more likely to spook from.
