I think the real thing is better. I don't think we can fathom the ability of a deers nose. It is written that a drug sniffing dog can detect 1oz of marjuana submerged in a gallon of gasoline and the "experts" believe a deer's smelling ability is at the very least this good. With this in mind, I believe that they can detect a difference in synthetic vs real.

I don't know I just try whats been succesful in the past and for me, it's trails end. I would like to try the Standing estrous from code blue, but i have a hard time parting with $39 for deer pee.

If someone wants to do a kinky expirement based on the thread that deer cannot tell the difference between human and deer pee, have the wife or GF pee in a bottle near "her time" and see the results.