First of all - these products that claim to be 100% coyote or wolf urine are fakes.    Do the math - I called some local Agways and they sell dozens to hundreds of bottles of this stuff every year.   Multiply that by all the Agways - nevermind that this stuff is also sold in zillions of other stores and on the web all over the US - you would need captive herds of thousands or 10's of thousands of coyotes or wolves to supply that much urine assuming an efficient method of capturing it.   One company's website claims that it's collected in "zoos and game preserves" through the floorboards, but nevermiund the fact that there aren't enough zoos and game preserves in the country to supply that much urine, the other problem is that modern preserve and zoo management doesn't keep predators inside cages and stalls all day long.   Instead they are allowed to roam a natural habitat where coyoyes and wolves pee a little bit here, there, and everywhere, to mark territory.

Anyway, WRT deer - I've had excellent success using a single-strand electric fence powered by a Zareba Snap'R solar electric fence charger.    It cost me about $80 and protects a perimeter of about 400 feet.   To train the deer you hang a few pieces of aluminum foil baited with peanut butter - they touch it and get zapped and learn VERY quickly!!    I've gotten zapped a couple of times with it and it hurts but doesn't do any harm.