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I've seen zero untreated survivors.

Along Rich's comments, they feed very shallow so sapwood rot sets it quickly though fruiting bodies may not be evident. Sapwood strength loss can make for very dangerous trees to work on and in. Be safe.

Still needs to be used wisely due to the long residual. Imagine how many bees would die if a linden or crab apple was injected with the stuff.

No problem

I've treated well over 1000 ash for eab since 2012 alone, started some treatments as early as 2004 as Columbus was an epicenter due to fast urban sprawl and redevelopment. Chionanthus is indeed a host and our American version is more susceptible. Em Ben is most effective for trees over 15" and...