In Olympic National Park, backpackers are encouraged to only pee in the maintained hiking trails because blacktail deer will seek out the pee spots and dig up the ground for the salt content.

I have personally seen a deer digging at a pee spot about 10 ft in front of my tent in the middle of the night.


I don't know if they like or dislike the odor, but the salt content will definitely attract them, much like a salt lick.