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ARS entomologist Robert Hollingsworth and colleagues like Washington State University plant pathologist Gary Chastagner (shown here) have been testing how effective current methods are at keeping yellow jackets from hitching a ride on Christmas trees being shipped to Hawaii.

ARS entomologist Robert Hollingsworth and colleagues like Washington State University plant pathologist Gary Chastagner (shown here) have been testing how effective current methods are at keeping yellow jackets from hitching a ride on Christmas trees being shipped to Hawaii.

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