Imidacloprid on a program is probably the best bet. I use quail-pro Imidicloprid 2F as it seems to be the most cost effective. I also know that Tempo SC Ultra is about the only product labeled for knock down control of them. You can pick it up for right around $50 and last time I looked it was just as cheap on google shopping. I've never used it for emerald ash borer but it is a quick knockdown of about everything. I just got a decent order or assorted insecticides from Lawn and Pest Control Supply on google as they really had good prices. Especially when buying cases.
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