2012 I had a "swarm" of termites, viz. newly hatched critters came into my house. Terminex treated the property and no more termites. I declined any further agreements. Yesterday I had another "swarm." I scheduled an appt w/a rep for tomorrow but the lady on the phone was extolling the virtues of a longer term contract. I also have another company rep scheduled, also for tomorrow. If the treatment lasts 8 or 9 years, is there any advantage to an ongoing contract with such a company?