Dow Tordon Ready to Use Specialty Tree & Stump Herbicide - 1 Quart
Product Review (submitted on July 16, 2012):
1 ml of Tordon RTU placed in a hole drilled into a locust tree trunk every 3 inches around the entire tree flat out smokes black and honey locust trees. It's great stuff. Just drill into the trunk at an angle about 1 inch, and fill the hole with Tordon. Tree is dead within weeks.