7 Signs That You Might Have a Rat Infestation

Rats aren’t just an occasional nuisance—they can cause serious problems for homeowners here in the Midwest. Whether you’re in Des Moines, Kansas City, or Omaha, spotting the signs of a rat infestation early can help you avoid the damage (and headaches) that come with a full-blown rodent problem.

Let’s walk through seven telltale signs that could mean you’ve got rats making themselves at home in your home.

Key Takeaways

• Rodent droppings, scratching sounds, and gnaw marks are signs rats are active in your walls and hidden spaces.
• Rat nests, urine stains, and foul smells create health risks that make cleaning up hard after an infestation.
• Holes near foundations, strange pet behavior, and greasy smudges show rats are entering and nesting inside your home.
• Pest control professionals use bait stations and proven treatments to get rid of rats and protect your home.

1. Rat Droppings in Hidden Areas

One of the first and most common signs of a rodent infestation is rat droppings. These are typically dark, shaped like a grain of rice, and found in hidden areas like attics, basements, or behind appliances. Unlike the smaller mouse droppings, they are larger and more noticeable.

If you’re finding them regularly, especially near food sources or pet food, that’s a sure sign you’ve got a rat problem.

2. Scratching Sounds in the Walls or Ceiling

If you hear scratching sounds, scampering, or scurrying behind walls, ceilings, or under floorboards, you’re likely dealing with rats. They’re most active at night, and these scratching noises often come from attics or basements.

Rats use these areas as runways to move between nesting spots and food. It might not sound like much, but these noises are a key clue that something’s not right.

3. Gnaw Marks on Wood, Wires, and Food Packaging

Rats gnaw on just about anything to keep their teeth in check. You might spot teeth marks or gnaw marks on wood, plastic, and especially electrical wiring. They’ll also chew through food packaging in search of an easy meal.

This is not only destructive—it can also be dangerous. Damaged wiring can lead to electrical fires, which adds serious health risks beyond just a simple rat infestation.

4. Nesting Materials and Rat Nests

Rats are crafty builders. They’ll gather nesting materials like shredded paper, insulation, fabric, or even plant matter to make cozy rat nests.

You might find these nests in basements, garages, or attics. Around these spots, you may also notice rub marks or smudges—greasy trails from their fur along walls, baseboards, or entry points.

If you see any of this, it’s time to consider calling in pest control.

5. Unusual Pet Behavior

Pets can be the first to pick up on rat activity. If your dog or cat is sniffing around certain parts of the house, pawing at walls, or acting jittery, they might sense rats nearby.

Rats tend to avoid humans but might cross paths with your pets while foraging for food sources. It’s also worth noting that rats can carry fleas, which can spread to pets and people, increasing the health risks in your home.

6. Rat Holes and Entry Points Around the Home

Norway rats, which are more common around here than roof rats, are notorious burrowers. They dig rat holes near foundations, crawl spaces, under decks, or patios. Inside, they find entry points through gaps in walls, doors, or around pipes.

Rats are climbers too, so don’t be surprised if they access upper floors or attics. If you spot holes around your home’s perimeter or inside near baseboards, that’s another one of the telltale signs.

7. Foul Odors and Urine Stains

If there’s a strong, musky smell in the house, you could have rats. Their urine has a sharp odor and can leave behind urine stains in areas like attics or under sinks where water sources might attract them.

A heavy infestation often means multiple rats, which can quickly lead to contamination and increase the chances of spreading diseases like hantavirus.

Once the rats are gone, it’s important to thoroughly clean up to avoid lingering problems.

How to Get Rid of Rats for Good

Rats don’t go away on their own, and trying to manage an infestation with a mouse trap or two won’t cut it. At Miller Pest & Termite, we specialize in rodent control and pest management that works. We use proven methods including bait stations and targeted treatments to safely and effectively solve your rat control issues.

From identifying the type of rodent to sealing entry points, our team has the know-how to protect your home and your family.

Wondering how to get rid of rats?

Give us a call and let us handle it—so you don’t have to.