Roof Norway Rat - Casner Exterminating
Central Coast 800-655-4044

Roof Norway Rat

December 8, 2014


Norway Rats

  • Other Names: sewer or brown rats
  • Stocky rodents, burrow – larger than Roof Rats

Roof Rats

  • Other names: black rats
  • A little smaller than Norway Rats
  • Long tails (tails are longer than their heads and bodies combined)


Norway Rats

  • Burrows along foundations of buildings, under trash or wood piles, and in moist soil around fields and gardens
  • Line their nests with cloth, shredded paper, or other fibrous material
  • Usually remain in basements or on ground floor
  • Found throughout the United States. Prefer lower elevations; may exist wherever people live.

Roof Rats

  • Very nimble climbers
  • Prefer to live in trees or shrubs or dense vegetation (e.g. ivy)
  • Usually found in enclosed or elevated spaces like walls, false ceilings, attics, and cabinets
  • Found in a limited geographical range
  • Prefer Oceanside, warmer climates


  • Either eat or contaminate food
  • Damage structures and property by gnawing
  • Serve as hosts to transfer parasites and diseases to other animals and humans
  • Signs of their presence (see sidebar)
  • Together, the biggest pests in California: Roof Rat and Norway Rat
  • Important to recognize which species of rat is present in order to place traps or bait in the most effective locations

Contact Us

Contact us for help with a problem with Roof Rats or Pharaoh Rats. You may also call either our Central Coast office or our Ventura County office.

Get Started
Know Your Pest blog


Odorous House Ant

Family Structure Queens can lay as many as 20-30 eggs in single day; usually lay only 1-2 (or less) eggs per day on average over long periodsREAD MORE