One application kills insects, and prevents new infestations for an entire year. No spraying, just 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 borers, (including Emerald Ash Borer & Asian Long-horned Beetle), adelgids, miners, whitefly, scale, beetles, weevils.