PROBLEM TO BE SOLVED: To provide an assembly unit injecting a termite exterminating agent enabling the agent to be injected into the lumbers, supplied and inspected, capable of installing even in an old house, safe and easy to install and exchange, and to provide a method for exterminating termite using the above assembly unit.;SOLUTION: This assembly unit 1 comprises injection cylinders 2, pressure pistons 3, liquid agent injection tubes 4 and closure elements 5, and these components are exchangeable respectively. This assembly unit 1 works as follows: a termite exterminating agent F filled in the injection cylinder 2 is continually injected, via the closure elements 5 fitted into lumbers respectively and the corresponding injection tubes 4 set up adjacently to the closure elements 5, into the lumbers W while being continually subjected to an appropriate pressure by the aid of the pressure pistons 3 each provided with pressure means 8a and 8b such as springs. Each of the injection cylinders 2 is made of a transparent material and a means for the information of the pressure piston positions is set up for visibly recognize or confirm a decrease of the agent F in the injection cylinders 2, and the injection cylinder(s) 2 is (are) exchanged, if necessary.;COPYRIGHT: (C)2002,JPO
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