Does anyone know how to get rid of carpenter ants? I have a pretty good size tree that hangs over the driveway, and noticed sawdust under it. I looked up and can actually see the sawdust flying out of the branch. I soaked the branch with Sevin and swept up the sawdust, but today its back. Short of calling an exterminator, is there anything that can be done? Its the last tree left on my property and I dont want to lose it.