Liquid deer cane is a type of attractant that is used to lure deer into an area. The active ingredient in liquid deer cane is a pheromone, which is a chemical that is released by animals to communicate with other members of their species. Pheromones are often used in animal husbandry to attract mates or to trigger aggression. When used as an attractant, pheromones can be sprayed on leaves, grass, or other vegetation. The pheromone in liquid deer cane imitates the scent of a doe in heat, which causes bucks to become interested in the area and travel to it.