These guys are great. I had a problem with carpenter ants, mice, and wasps in my new house. Every morning I would go into my kitchen and see a stream of ants near the dishwasher, obviously a nest had developed during construction.
Our technician came out and from the very next day I never saw another ant in the the house. Very professional and thorough. I am actually on a quarterly service plan.
They are located in Kent, WA.