Name two common signs of rodent problems in structures.

• A. Droppings and gnaw marks, with rub or grease marks along walls.
• B. Honeycomb patterns.
• C. Moth damage.
• D. Powder on windows.

Answer: (A)

Two common signs of rodent problems in structures are droppings and gnaw marks, often with rub or grease marks along walls. Droppings indicate recent activity and tend to accumulate where rodents nest, feed, or travel. Gnaw marks show ongoing damage as rodents chew to access materials and keep their teeth worn. The rub or grease marks along walls come from the oil and dirt on their fur as they travel their usual routes, leaving visible trails. Together, these signs point to an active rodent presence inside a building. Other options don’t fit rodent activity: honeycomb patterns come from bees, moth damage targets fabrics, and powder on windows isn’t a typical rodent sign.