What about #2?
Easier than draining the bladder is to use a syringe to draw from bladder & transfer to bottle.Also, when you shoot deer try to drain the bladder in a bottle to use. I don't do this in early season but a rutting buck or doe in heat I will try and save as much urine as possible when dressing out.
What about #2?
Deer around where we hunt are smarter than, the average deer. I would say they would know the difference. Once the rut fires up in full force,anythings possible.
Ive had bottled deer urine ,spook deer. My logic is ,why take a chance,its hard enough to take a mature buck. I usually take a 20 oz pop with me anyway.