I have been thinking of using something to discourage tree limbs from growing out into lanes used for deer hunting. I notice the power line companies use something of this nature. It does not kill the entire tree just the limb growing out toward the line. I am guessing they are using something like Diquat? Any of you do anything similar to this, if so what are you using? Not wanting to kill the entire plant just the limbs growing out toward the shooting lane.