Generally, the treatment of Carpenter Ants is an episodic program meant to break up the reproduction cycles of the nesting within a wall system. Even though you may thoroughly treat wall systems or eliminate all reproductive and worker ants within a particular nesting area, thousands of eggs (larva) can lay dormant for up to 10 months. With that in mind, we have set up a program that serves in the purpose of total elimination, rather than just putting a band aid over the situation. We set you up on 4 services that span over the course of a year, to guarantee that we are addressing the issue through all durations of possible reproduction. The duration between services is 3 months. The reasoning behind spacing them out that way, is that the products used to eliminate your problem tend to break down and become ineffective at the 90 day period. The cost of Carpenter Ants treatments, is definitely a little higher in scale. When you take on a program of this cost, you are immediately upgraded to a Complete Solutions Program customer. That means, we will address any pest control issues that you may have with the exception of termites, powder post beetles, and honeybees. A great value for the dollar.