I recently had two companies give me quotes on pruning the deadwood from my large honey locust tree.
Company A was marketing itself as stronger in tree health, and they boasted spraying anti-fungal on the freshly-cut limbs, claiming honey locusts are susceptible to fungal infections.
Company B said that they have found this spraying to be ineffective and don't recommend it. They are more of a run-of-the-mill trimming company but they're passionate and climber-only.
I have not found any discussion either way in my Interwebs search. Does anyone have any insight or references?
EDIT: I am in the northern Midwest of the United States.