Rats revisited

We took the car to the auto electrician, who inspected it and said that he couldn't find any exposed wiring or other obvious problems, so the next thing to do was have it checked by the computerised system at—you guessed it—a Subaru dealer. Subaru doesn't make the necessary software available to other fixit places (at least not until a car model is at least 3 years old, which is when the basic warranty expires), so it's a dealer or nothing. The electrician said the car was safe to drive, but we of course could not trust any of the instrumentation. He didn't charge us anything for the inspection, either. The first chance we'll have to get the car looked at is the week of 17 November, so that's when we're going to Townsville; we wanted to go there anyway around that time. After we left the electrician's, we stopped at a service station to top up the fuel. It took very little, thus confirming that the fuel level was what we'd thought it should be. Of course, the gauge is still showing empty. Meanwhile one of our neighbours gave us some rat poison to put in the engine compartment. I hate rat poison, because some animal or bird might eat the dead rat and be poisoned in turn, so I'm reluctant to use it.