Will go check this giant locust next time I am back there. This one got the Triclopyr treatment and girdled. Had a question on why girdling a locust and ones this big I don't feel like felling at the moment. But do feel like killing.
Double girdle very rarely doesn't work. Just gotta watch for sprouts below the cuts.
Certain trees I really enjoy killing; junipers, locust, and bradford pear are near the top!