Alan from Fruita, Colorado writes
Trying to create zone of death for elm seed bug larvae to cross on their way down the trunk to get water
Martins Permethrin 10% is not labeled to be painted onto tree trunks. You can dilute this product at a rate of 6 oz per gallon of water with a hand-pump or backpack sprayer and then spray around the perimeter of your home to control elm seed bugs. This article from your Colorado Extension has great information about this pest and its life cycle. They suggest treating around your home for the best defense against this pest since the trees will already have populations too established for you to control with insecticides.
Answer last updated on: 04/10/2019