Why Norway Rats Are Common in Perrysburg
Perrysburg was built on drained wetland ground. The city sits on the edge of what was once the Great Black Swamp, a roughly 1,500-square-mile network of forest and marsh that stretched across northwest Ohio before it was cleared for farming in the 1800s. That history didn’t disappear when the subdivisions went in it’s still sitting in the clay underneath them. Wood County’s heavy clay soil drains slowly, so even weeks after a Maumee River spring flood or a heavy rain, the ground around foundations, retention ponds, and drainage swales stays damp. Norway rats are ground-burrowers by nature, and damp, slow-draining clay is easier to dig into and hold a burrow in than the sandy soil found in most other parts of northwest Ohio. Homes near the Maumee River bluff, along the ponds in Riverbend Lakes, or backing up to any of the city’s drainage corridors sit closest to that moisture and see the most burrow activity as a result.
Newer construction off Route 25 adds a second factor: fresh irrigation lines, freshly graded landscape beds, and utility trenches that haven’t fully settled yet. That loose, recently disturbed soil is faster and easier for a rat to burrow into than compacted, older ground which is why newer western Perrysburg developments often see burrow activity within the first year or two after move-in.