Maryland Category 7D – Rodent Control Biology, Inspection, And IPM Strategies Practice Exam

What should be used to seal gaps around utility lines?

Escutcheon plates and metal flashing Cardboard cutouts Duct tape only Wooden plugs

Correct Answer:

Escutcheon plates and metal flashing

Explanation:

Sealing gaps around utility lines is about creating a durable, rodent-proof barrier at penetrations to prevent entry. Escutcheon plates cover the hole around the pipe and provide a tight, finished seal at the wall, while metal flashing closes larger gaps and forms a smooth, chew-resistant barrier around the penetration. Together they effectively block rodent access and are designed to withstand weather and chewing. Other options fail because they aren’t durable or resistant to chewing: cardboard cutouts can deteriorate and are easily gnawed through; duct tape degrades with moisture and age and won’t stop pests; wooden plugs can rot or be gnawed around, leaving openings.

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