Yes, Merit 2F Insecticide can be used as a systemic drench for emerald ash borers. You would apply 0.1 to 0.2 fl oz per inch of truck diameter. Uniformly apply the dosage in no less than 10 gallons of water per 1000 square feet as a drench around the base of the tree, directed to the root zone. Remove plastic or any other barrier that will stop solution from reaching the root zone.
Answer last updated on: 04/06/2016