CHANGSHA - When restaurants have closed at night, Ma Dayong's work begins.
He checks the nearby area, hammers in a few nails to help fix thin iron wire into a trap that can carry 1,600 volts, then turns off all the lights and retreats quietly to a comfortable place to watch, and wait.
If lucky, he can stretch his legs out on a couch. Sometimes he makes do by taking short naps with his head on a dinner table. He is frequently woken up by alarms from the trap.
"We've got a catch!" Ma exclaims and hurries to the dark kitchen, careful to turn on his flashlight first and not to tread on the wire himself.
Ma is a rat exterminator, and his greatest gift to new customers is a large number of dead rats.
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