Treatment. If caught early, emerald ash borer infestation can be treated by giving the affected tree extra water and fertilizer to help it recover from the damage, and with insecticides. Insecticide treatment should only be done by professional arborists. Badly infected trees must be removed and the wood either chipped or burned.Are emerald ash borers harmful?
Because emerald ash borers and other harmful forest pests and diseases can move around on firewood, don't move firewood over long distances. If you're going camping at a park or staying a cabin in the woods, buy firewood for your trip when you reach your destination.