An injection apparatus for treating soil adjacent a structure has a handle and a manifold head attached to the handle. The manifold head has at least one inlet and at least one internal passage in fluid communication with the at least one inlet. A high pressure nozzle is in fluid communication with the at least one internal passage in the manifold head and is adapted for emitting a discharge stream of pesticide for subsurface injection of the pesticide. A low pressure nozzle is provided for applying a pesticide to the surface. The manifold head has a substantially planar contact member having a contact surface for contact with the surface beneath which the pesticide is applied. The contact member has a first opening in the contact surface in fluid communication with the high pressure nozzle and a second opening in the contact surface in fluid communication with the low pressure nozzle.