Don't mean to pour any water on the fire, so to speak (Freud did opine that preventing such was one of the reasons women were responsible for mangaging the hearth)...
Foxes and Coyotes will act more wary, but will definitely come to check out the scent.
Hair might work in an area where there are few deer, but the high number of ungulate rats in our neck of the woods require welded wire cages staked with fence posts to keep the Pecan saplings from being stripped (dumped big bags of hair to no effect with first set of saplings - eaten to the ground), White Pine suffered similar fate. We've gone to ornamentals that are poisonous to deer (plenty of Wisterias/Castor Beans/etc.) and fence all the saplings.
Foxes and Coyotes will act more wary, but will definitely come to check out the scent.
Hair might work in an area where there are few deer, but the high number of ungulate rats in our neck of the woods require welded wire cages staked with fence posts to keep the Pecan saplings from being stripped (dumped big bags of hair to no effect with first set of saplings - eaten to the ground), White Pine suffered similar fate. We've gone to ornamentals that are poisonous to deer (plenty of Wisterias/Castor Beans/etc.) and fence all the saplings.