We have them here. To me, they are a problem when they eat what I plant. Now that I have two dogs, the deer stay at least 75 ft from the house. The dog have 90 ft from the house with their electric collars. I have never seen the dogs bark or go after the deer. I think it is the smell of the dogs that keeps them away. We also have coyotes so I am sure the deer know to stay away from them.