A method for the extermination of burrowing vermin is disclosed. The method employs a smoke generating fluid formed of castor oil or castor oil in a mix with secondary components. The fluid is heated to a smoking temperature and the smoke is mixed with a pressurized airflow to communicate the smoke to the tunnels occupied by the burrowing vermin to remove them, and to leave a residue from the smoke which exudes an order deterring the re-occupancy of the tunnels.

Disclosed herein are new tunnel forming shanks and methods of using the same that are configured to lessen the damage done to soil and crops, and to overcome underground obstacles in comparison to prior art tunnel forming shanks.

A rodent gasser including a smoke cartridge and having a self ignition system is provided. According to a first embodiment, the self ignition system has a top plastic cap covering a strike pad and a lower plastic shroud that protects the rodent gasser ignition system prior to use. An ignition button is provided under the shroud that works with the strike pad to ignite the smoke cartridge. According to a second embodiment, the self ignition system has a top plastic cap covering activation components of a pull pin ignition system that include a gripping element and a connecting element that couples the gripping element to an internal ignition assembly. The gasser is ignited by pulling the gripping element. A method of using the rodent gasser is also provided.

A system and method for eradicating burrowing rodents uses an internal combustion engine running at high speed and zero mechanical load to convert gasoline and air into pressurized carbon monoxide entrained in an inert gas mixture consisting mostly of nitrogen and water vapor. A heat exchanger cools the exhaust gas and provides it to one or more outputs. Respective hoses are coupled to the outputs, with each hose coupled to an injector tube adapted for insertion into a subterranean tunnel in which a rodent may be present. The engine is preferably mounted on a wheeled tubular frame which may be part of a hand truck or a trailer frame, with the frame serving as both structural member and as heat exchanger. The system pumps gas into the tunnel, replacing the existing atmosphere with oxygen poor, CO rich gas that causes the rodents to succumb to a combination of CO poisoning and hypoxia.