| 摘要 |
This invention relates to a novel system for exterminating insects in a building, and particularly, to such a system which may be installed after the building is completed. This system includes a tunnel device which provides access to the cavity between the interior and exterior walls of a building. The installation of this device in the interior wall of an existing building provides more effective access of fumigant to pests which may be living in the space between the interior and exterior walls. This tunnel device can be concealed from view or provided with a decorative cover plate. The other component of this system includes a reservoir of fumigant which can be matingly engaged with the tunnel device and dispense and effective dosage of pesticide into the cavity between the interior and exterior walls.
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