Remember that there is no drilling damage from ArborSystems Wedgle Direct-Inject Tree Injection System because it does not require any drilling of the tree. So, what happens when you drill a tree to provide an injection? Drilling wounds compartmentalize, disrupting nutrient movement. Drilling for injections allows air into the sapwood, disrupting translocation and reducing chemical effectiveness. Air entering the vascular system disrupts nutrient movement. And drilled holes often extend beyond active layers, so chemical is lost in non-active wood where the tree cannot use it. Drilling wounds cause permanent damage and repeated drilling can seriously impact tree vitality. For more information and photos, click here.