A termite extermination method of the present invention includes putting a termite extermination device 1 at a termite habitat. The termite extermination device 1 includes an exterminating agent housing 3 that is at least partially formed of a moisture-proof film 12 and houses an exterminating agent 13 in an interior of the exterminating agent housing 3. The moisture-proof film 12 includes a laminate having a paper layer and a metal layer laminated one upon another. At least the paper layer is subjected to a rugging process. The laminate is disposed in the exterminating agent housing 3 so that the paper layer serves as an outermost surface.
