Why should pines be felled and cut into short sections before applying an insecticide?
• Insecticides kill beetles in part by penetrating the bark and killing the developing brood and in part by killing beetles as they chew out before flying away. For the area-wide suppression program to be effective as soon as possible, it is important that all infested bark be sprayed to the point of runoff. By cutting the trunk into easily rolled sections and by adding a conspicuous coloring agent to the insecticide, the applicator is able to assure the necessary coverage.
