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Bob from Grand Island, Ny writes

How much of Hi-Yield 38-Plus do I add to a gallon of water for killing lilac borers?


Hi-Yield 38-Plus Insect Control 38% Permethrin is applied at the rate of 1.6 fl oz per gallon of water for outdoor pest applications as directed on the label.  It states the following also, "Borers and Bark Beetles: To prevent infestation of Ornamental Trees and Woody Shrubs, spray the bark to the point of saturation, but do not let runoff occur. Repeat treatment every 21 days during early Spring until Mid-Summer."

Answer last updated on: 03/12/2021

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