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Old 07-08-2016, 06:57 AM
Machine Elf Machine Elf is offline
Join Date: Feb 2007
Location: Challenger Deep
Posts: 10,623
Shop vac with a half-inch of soapy water at the bottom of its catch-bin. Set the end of the hose by the nest entrance, and walk away for an hour or two. Best to do this in the middle of the day, when they're active. Any YJs coming or going will get sucked in; the soapy water will take care of any that don't get killed during their violent trip up the vac hose.