How would you clean the inside of your converter?

I used a compressor on mine several years ago to remove the dust, etc.... there were also aluminum leftovers from the construction of the trailer that hadn't been cleaned up. At least one of the little metal "half moons" got blown into the converter without my knowing it. As soon as power was applied, the magic smoke was let out of the converter, requiring a new unit. Probably a blessing in disguise, as the new converter is a much superior unit to the OEM unit. But still......