I have 4 pines on the property, 3 are doing okay, the 4th one is starting to lose large chunks of its bark and I am worried. these trees are over 75 years old and they are majestic. the previous owner of our home had once considered cutting them down. I have thought about wrapping them so the insects and woodpeckers dont have easy access to the bare wood. What can i do to protect these guys?