Buy on Amazon : br br Acecap 75-Pack Systemic Insecticide Tree Implants for Control of Tree Pests 38-Inch br br No chemical exposure to applicator or the environment br Season-long control of tree pests up to two seasons in evergreen trees br 10 implants will treat a 14 inch diameter trunk br Tools required to treat tape measure cordless drill with 38 inch bit hammer and bolt or dowel rod br Ready to install - no measuring of chemicals