Where do rats go in winter?
Short answer: Winter does not shut rats down. Roof rats often move into attics, walls, and commercial food buildings in colder climates. Norway rats stay closer to ground level in walls, basements, crawlspaces, burrows, and sewers, and can remain outdoors if food and shelter stay available. Inspect monthly, seal gaps, and remove outdoor food.
Which rats matter around homes
The two pest rats homeowners deal with most are the Norway rat and the roof rat. Norway rats spread widely across the U.S. Roof rats have been here longer and are excellent climbers. Mice are more sensitive to temperature swings; rats are tougher and stay active through winter.
Winter harborage: roof rat vs Norway rat
- Roof rats: more likely to come indoors in colder climates; attics, wall voids, and food markets are classic. They are elusive and often hard to find and control.
- Norway rats: usually ground-associated, but they climb. Look in walls, basements, crawlspaces, burrows, wall holes, and sewers. They can succeed outdoors when shelter and food remain.
What rats do in the cold months
Rats are resourceful. They swim, hide, chew through garbage bags and many plastic containers, and use sharp hearing to avoid danger. Winter does not force every rat into a burrow until spring. They still need food, water, and harborage. Warm winter evenings often mean more open foraging; cold nights keep them closer to cover except when they need food. Indoors, if those three needs are met, they may stay year-round. You can still see rats tearing into outdoor garbage in winter.
How to protect your home
Inspect monthly. Check for burrows, and look in the attic, basement, and crawlspace. Seal foundation holes and torn vents. Keep fallen fruit and other outdoor food from sitting. If you can push a pencil through a hole, it is large enough for a mouse and not far from rat access. Noises in walls can be rodents. Learn what you are seeing so prevention sticks. For species detail, start with the Norway rat and roof rat guides.
Related guides
References
- UC IPM: Rats
- University of Georgia Extension: Rats and Mice: Get Them Out of Your House and Yard
- CDC: How to Seal Up to Prevent Rodents
This article was written by Greg Baumann, founder of Pest Sherpa, and reflects more than 40 years of professional pest management experience.
About the Author
Greg Baumann | Pest Control Expert
Greg Baumann is the founder of Pest Sherpa and a Pest Control Expert with more than 40 years of professional pest management experience. His articles combine decades of field experience, technical expertise, and science-based guidance to help homeowners identify pests correctly, understand real-world risks, and make informed pest management decisions.
Mission: Identify the pest. Understand the risk. Stop the problem. Prevent the comeback. Know when it’s time to call a professional.