Q: Have you experienced secondary and tertiary termite colony attacks on sites, which do not have noticeable ground connection?A: Yes, but I have worked in the Pest Control Industry only in South Central US (OK, AR, TN, and MS) Most of my experience has been with Eastern Subs (reticulitermes flavipes). The common factor on each of the occurrences has been a moisture source (and food) above ground.
With what species are you dealing? Identification is key to diagnosis and treatment.
While visiting the Entomology Dept of the University of AR this week, I inspected a display case housing working termites. Dr. Allen Szalanski had collected workers off of a piece of wood several years (I believe he said 5-7) earlier. He confirmed that neither a queen nor reproductives had been collected; yet the little colony thrives today. Inspection of the case reveals immature termites. It seemed clear that they'd created a queen from among themselves. How ever they did it, they had managed to survive in his care/case for several years - clearly cut off from the ground.
Q: What are your views on managing such a problem, particularly in concrete/rcc structures?A: (Again, I’ll emphasize that identification is key!) Moisture elimination would probably be my first objective, having been unsuccessful with basic chemical treatment.
I’m not an entomologist and I’m sorry that my experience may be too narrow to help you. Assuming this is not a hypothetical situation, please update us as your case progresses.
