One application kills insects, and prevents new infestations for an entire year. Spray or simply mix and pour at base of plant. Systemic insecticide is absorbed through the roots to all parts of the plant, even new growth, and won't wash off. For use on listed fruit, nut and ornamental trees and shrubs. Kills Asian Longhorn, Emerald Ash, and other borers, adelgids, miners, whitefly, scale, beetles, weevils.