I had a big problem with Carpenter ants getting into my house. These guys did a great job of getting rid of my problem. They sprayed chemicals into the exterior walls, inside my house, and along the outside perimeter. A month later, a found a few more ants walking around so these guys came back to do a second application without any extra charge. They guarenteed their work for 2 yrs. It's been 2 yrs now and I haven't had any ant sightings since. What a relief ! Thes guys are good and very informative. Gave me some good tips to avoid problems from re-occuring.