I have what I assume to be carpenter ants excavating a trimmed back stump at the base of a very tall pine. There is a pile of sawdust and black ants. How can I stop them? Thank you.
Identify where the greatest activity is and then soak it down with a carpenter ant killer like this one. http://www.bonide.com/products/home-pest-control/view/567/termite-and-carpenter-ant-control-conc