Common Signs You Have a Rat Infestation in Your Attic, Walls, or Crawl Space—and How to Keep Them Out

Sep 13, 2024 | Animal Removal, Exclusion

Rats are among the most unwelcome pests that can invade your home. Not only do they cause significant property damage, but they also pose serious health risks. If you suspect a rat infestation in your attic, walls, or crawl space, it’s essential to act quickly. This guide outlines the most common signs of a rat infestation and provides practical steps to keep them out for good.

Common Signs of a Rat Infestation

1. Noises in the Walls or Ceiling

One of the earliest signs of a rat infestation is hearing noises, especially at night. Rats are nocturnal, meaning they are most active after dark. If you hear scratching, scurrying, or squeaking in your attic, walls, or crawl space, it’s likely a rat problem.

2. Rat Droppings

Rats leave behind droppings that are 1/2 inch to 3/4 inch long, cylindrical, and typically dark brown or black. These droppings are usually found along the rats’ travel paths, such as along walls or near food sources. Finding rat droppings is a clear sign that they have taken up residence in your home.

a wire chewed by a rat

3. Gnaw Marks on Various Materials

Rats constantly gnaw to keep their teeth from overgrowing. Be on the lookout for gnaw marks on wood, electrical wiring, insulation, and even stored food. Damaged insulation or chewed-up electrical wires are strong indicators of a rat infestation.

4. Rat Nests in Hidden Areas

Rats build nests using materials like insulation, paper, and fabric. Discovering a nest in your attic, walls, or crawl space is a clear indication that rats have moved in. These nests are often hidden in dark, cluttered areas

5. Grease Marks and Rat Tracks

Rats leave greasy smudges from their fur as they navigate along walls and baseboards. Additionally, their tracks can sometimes be seen in dusty or less-used areas. Look for these signs, especially in corners or along walls.

6. Foul, Musky Odors

A rat infestation can create a foul smell in your home. This unpleasant odor comes from their droppings, urine, and nesting materials. If you notice a persistent, musky smell, it could be a sign of rats hiding within your walls or attic.

7. Damage to Food Packaging

If you discover chewed or torn food packages in your pantry or storage areas, rats may be to blame. They often raid food supplies, leaving behind droppings and urine, which contaminate food and increase health risks.

How to Keep Rats Out of Your Home

1. Seal All Potential Entry Points

Open Entry Point For Roof Rats

Rats can squeeze through very small openings. Inspect your home for gaps around windows, pipes, vents, and any cracks in the foundation. Seal these entry points with steel wool or metal mesh, as rats can easily chew through plastic or rubber materials.

2. Maintain a Clean and Organized Home

Rats are attracted to clutter and food scraps. Keeping your attic, walls, and crawl space clean reduces their potential nesting areas. Store food in airtight containers and avoid leaving pet food out overnight, as this can attract rats.

3. Trim Overgrown Vegetation

Rats often use overgrown trees, shrubs, and vines as pathways to your home. Trim any vegetation that touches your house and keep your yard well-maintained. This makes it harder for rats to access your attic or crawl space.

rat caught in a trap

4. Use Traps and Baits

If you suspect a rat infestation, set up traps and bait stations along walls or where rats are most active. Always follow safety guidelines when using rodenticides, especially if you have pets or small children at home.

5. Install Rat Guards

Installing rat guards on vents and pipes can help block their entry points. You may also want to add metal barriers around the base of your home to prevent rats from climbing up.

6. Consult a Professional Pest Control Service

If the infestation is severe, it’s best to contact a professional pest control company. Pest control experts can safely and effectively remove rats, identify potential entry points, and provide solutions to prevent future infestations.

Roof Rat Proofing Over Builders Gap

Conclusion

Identifying a rat infestation early and taking swift action can protect your home from further damage and potential health hazards. By regularly inspecting your home, sealing entry points, and maintaining cleanliness, you can prevent rats from entering your living spaces. If you’re uncertain or find the situation overwhelming, don’t hesitate to seek help from a professional pest control service.

Following these steps will not only keep your home rat-free but also provide peace of mind, ensuring that your living environment remains safe, sanitary, and comfortable.

FAQs

1. How do I know if there are rats in my attic?
Common signs of rats in your attic include scratching noises, droppings, and gnaw marks on insulation or wires.

2. What does rat droppings look like?
Rat droppings are cylindrical, dark brown or black, and about 1/2 inch to 3/4 inch long.

3. How do rats get into my home?
Rats can enter through small cracks or gaps around windows, vents, pipes, or through overgrown vegetation that touches your house.

4. What’s the best way to keep rats out?
Seal all potential entry points, keep your home clean, trim overgrown vegetation, and use traps or professional pest control services if needed.

5. Should I call a professional for rat infestations?
Yes, especially for severe infestations. Professional pest control experts have the tools and knowledge to safely remove rats and prevent future issues.