I have a buddy that grows out doors and he uses 80lbs fishing string He takes the string and makes a fence with it by going around trees and tieing it to each tree at differnt heights say at 1' one at 2' one at 3 ' and one at 4 ' He says that rabbits and or rats will sometimes still chew on them but the deer run into this and get scared. He told me that he has found the line broke a couple of times but never has had any plants gone since he started using it.