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Signs of Rats or Mice in the Attic (Dallas–DFW)

Hear scratching at night? See droppings or chewed wires? Here are the top signs of rats or mice in your attic and what to do next in Dallas–DFW.

Updated: January 14, 2026 Area: Dallas–DFW

Common signs to look for

  • Scratching or scurrying sounds at night (attics are most common)
  • Droppings (small dark pellets) in corners, along walls, or near insulation
  • Gnaw marks on wood, plastic, or even wiring
  • Grease/rub marks along beams or entry paths
  • Nesting material (shredded insulation, paper, fabric)
  • Strong urine odor or ammonia smell

Why it matters

  • Rodents can damage insulation and HVAC lines.
  • Chewed wiring can create a fire risk.
  • Droppings and urine can impact indoor air quality.

What to do now

  • Avoid sealing entry points until you know where activity is coming from.
  • Take photos of droppings/entry points if possible.
  • Request a free inspection to confirm activity, entry points, and next steps.

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If you want an expert to confirm what’s happening and discuss options, book your free inspection request. Any service you choose to purchase is fulfilled by Terminix.