 Well, you know, what you have to do is if you have an old piece of wood that has rotted, you basically need to cut that rot out because the rot is a fungi and it will continue to eat your wood. So what you need to do is to cut the rot out and then apply our product, copper green, and that will secure the wood. But any rot in the wood causes the wood to be unstable, so you've got to get rid of that rot.