The theft of catalytic converters has plagued Los Angeles County and the surrounding areas for a long time now. Catalytic converters are exhaust emission control devices that make the extremely polluting gasses produced by your vehicle's internal combustion engine into not as polluting (but still polluting) gasses. They're valued by thieves because they contain parts that are made of precious metals. These include platinum, rhodium, and palladium. Catalytic converters are located underneath y...