Roof rats & Norway rats
- Behavior
- Roof rats are climbers, they enter through the roof. Norway rats are burrowers, they enter through the foundation. Both leave thumb-sized droppings and grease trails.
- What makes them tricky
- Smart, neophobic (fear new objects), and can squeeze through any gap a quarter fits through. They learn trap locations. Real exclusion is the only durable answer.
- How we approach them
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- Roof-line inspection priority for climbers
- Foundation + utility penetrations for burrowers
- Bait stations sized for rat-scale entry