When Bill Rollie and Spencer McGrew, watercraft inspectors in Otter Tail County, Minn., interact with anglers and inspect their boats, it’s obvious what they’re looking for: zebra mussels or visible vegetation attached to boats and trailers.
What is a more inconspicuous item they’re looking for when anglers exit a water body is the microscopic aquatic invasive species that could be hiding in plain sight inside bait buckets, aerated or otherwise.
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