In this stage only, we come to know that there is termite infestation. This stage normally reaches after 2 to 3 years of harborage of termites beneath the building. By this time majority of the wooden door frames, other woodworks etc would be damaged by 85%. (Termites can finish any wood, paper, textiles even laterites)
This is what we see while opening up the infested area.
In chemical approach, we create a barrier between the earth and the building, there by arresting the entry of termites into the building.
It is done either in preconstruction stage or post construction stage
Making holes of 18” deep and 12mm diameter at an angle of 45 degree to floor and filling with emulsion- minimum 250 ml per hole or till it does not sock further and up to a maximum of 1 liter per hole. Then sealing with cement.
Have you observed any of the following lately?