In North Carolina, there are two options to get your trees treated: either hiring a professional or doing the treatment yourself. The cost for hiring a professional can vary depending on each business. You can find information about hiring a professional and a list of some providers in the Western NC region on our Hemlock Treatment Providers page.
Treating your hemlocks yourself can be quite simple and inexpensive. All you need is a little bit of simple equipment and the insecticide. Depending on the product you use and the size of the tree, the cost of the insecticide to treat hemlocks that are still fairly healthy can be less than $5. Hemlocks with worse health may be up to $25-50 or more per tree to treat. For more information, see our page titled Chemical Treatment for Landowners under the Resources tab.