Since moving into our house, we have had a major ant problem. They would come out about 3 times per year to treat our house. A few days after the first application, we would not see any more ants for the rest of the year. However, our ant problem persisted for almost 6 years. Frustrated, I called the sales office to complain. One of the managers understood my frustrations and offered to come out to my house and have a look. He came to the house a couple days later, did a walk through of our house and property, and sprayed in any areas he thought they might be in. Within 4 hours of him leaving, an entire ant colony had surfaced from within the house. After three more applications over a two week period, we have yet to see another ant.