Abstract: A peripheral termiticide delivery system of flexible apertured tubing is provided for injection under pressure of termiticide between the exterior walls of a building and its exterior coating. The tubing preferably has flanges extending therefrom whereby it is affixed to the walls around the building above ground level, and the apertures are protected from clogging by coating material. Injection ports for injection of termiticide into the tubing are disposed at intervals along the tubing, which ports are adapted to extend outside the exterior surfacing materials. Termiticide is injected under pressure into each port until all sections of tubing are filled to overflowing and termiticide exiting the apertures soaks the adjacent wall surfaces and runs down into the adjacent soil, creating a termite barrier. The system may be installed after construction by cutting a channel through the exterior coating, inserting the tubing into the channel and then reapplying exterior coating.