When they collect coyote urine it is from caged coyotes,,, coyotes, plural. At a trap set they can tell it is from several coyotes.
In the predator extreme magazine this month there is an article where a guy uses coyote, fox, bobcat, and rabbit urine to mist 360 degrees around the calling set. He claimes it over loads their brain to nose connection and they will stand down wind and can't figure out what the heck is going on, fox, coyote , rabbit, bobcat and human odors, he claims is too much at one time?? Interesting, I'll have to try it.T.20