Ever had a rat in your engine??

So my friend has a rat that keeps returning to eat her wires in her car's engine. BMW tells her it's common with their vehicles??!!! Like you know it happens often but you don't do something different, WTF???!!
Literally fix it today and tonight he returns - 4th time now!!! Nothing scares him off, not rat poison, chilly sauce, pepper corns, moth balls, you name it, we have tried it!!!

I keep waiting to see this little asshole come at me when I leave her house. I have visions of him doing this