It’s a trap … for a nasty pest

The Minnesota Agriculture Department begins hanging thousands of purple traps statewide on Monday, hoping to catch emerald ash borers to record the pest’s spread.

The trap is a three-paneled purple prism placed in an ash tree, coated on the inside with the smell of a stressed ash tree.

“Options for detecting EAB are few, and this is one of the only detection tools we have,” said the department’s Geir Friisoe. “It is important that the public do not disturb the traps so we can collect accurate and effective survey results.”

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