100% Real Wolf Urine effectively camouflages human scent and deceives prey by creating the illusion that the predator is active in the immediate area. Wild animals instinctively react to the perceived threat of danger. By using the urine to mark a perimeter like these predators do in the wild you are able to replicate the predator/prey response in each animal. Use Wolf Urine to repel moose, mule deer and bear. Active ingredient wolf urine.