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How to Tell If You Have a Rodent Infestation in Your Home

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No one wants to share their home with uninvited guests, especially when those guests are rodents. Mice and rats can squeeze through surprisingly small openings and settle into your living spaces before you even realize they're there. These pests don't just cause discomfort—they can damage your property, contaminate food, and pose health risks to your family. The good news? Rodents leave behind clear evidence of their presence, and knowing what to look for can help you catch an infestation early.

Think you might have rodents in your home? Don't wait—early action makes all the difference. Call (706) 546-1490 or fill out our online contact form to schedule an inspection today.

What Attracts Rodents to Your Home?

Before we dive into the warning signs, it's helpful to understand why rodents target certain homes in the first place. Mice and rats are always searching for three basic needs: food, water, and shelter. Your home can provide all three, especially during colder months when outdoor conditions become less hospitable.

In Georgia, Western North Carolina, and Upstate South Carolina, seasonal temperature changes drive rodents indoors as they seek warmth. Even small amounts of food left accessible—crumbs on counters, unsealed pantry items, or pet food left out overnight—can attract these pests. Clutter in basements, attics, and garages also creates ideal nesting spots where rodents feel safe and hidden.

Sign #1: Droppings and Urine Odors

One of the most obvious indicators of a rodent problem is discovering droppings around your home. Mouse droppings are small, dark, and pellet-shaped, typically about the size of a grain of rice. Rat droppings are larger, usually about half an inch long, and have blunt ends.

You'll most commonly find these droppings in areas where rodents travel and feed. Check behind appliances, inside cabinets, along baseboards, in pantries, and in corners of rooms. Fresh droppings appear dark and moist, while older ones become dry and gray.

Beyond droppings, you might notice a strong, musty ammonia-like smell. This odor comes from rodent urine and becomes more pronounced as an infestation grows. If you detect this smell in enclosed spaces like closets or cabinets, it's time to investigate further.

Sign #2: Gnaw Marks and Property Damage

Rodents have teeth that never stop growing, which means they need to constantly chew on things to keep them filed down. This behavior leads to visible damage throughout your home that can range from annoying to downright dangerous.

Look for gnaw marks on various materials around your property:

  • Wood: Check baseboards, door frames, furniture legs, and structural beams for small teeth marks
  • Plastic: Examine food containers, storage bins, and even plumbing pipes for signs of chewing
  • Electrical wiring: Inspect visible wires in your attic, basement, and behind appliances—damaged wiring creates a serious fire hazard
  • Cardboard and paper: Notice shredded boxes, torn insulation, or damaged documents that might be used for nesting material

Fresh gnaw marks appear lighter in color and may have rough edges. The size of the marks can help you determine whether you're dealing with mice (smaller marks) or rats (larger, more substantial damage).

Sign #3: Strange Noises in Walls and Ceilings

Rodents are most active during nighttime hours when your home is quiet. If you're hearing unexplained sounds after dark, you might have unwanted visitors living in your walls, attic, or crawl spaces.

Listen for scratching, scurrying, or squeaking sounds, especially in these locations. The sounds often occur in the same areas repeatedly as rodents follow established pathways between their nests and food sources. Mice typically create lighter, faster scurrying sounds, while rats produce heavier, slower movements that might even sound like thumping.

Pay special attention to sounds coming from your attic or between floors. These spaces provide rodents with quiet, undisturbed areas to nest and travel throughout your home.

Sign #4: Grease Marks and Rub Trails

As rodents move along walls and through tight spaces, the natural oils in their fur leave behind visible marks. These greasy smudges appear as dark streaks along baseboards, walls, and rafters where rodents regularly travel.

Rats, in particular, tend to follow the same routes repeatedly, which creates more noticeable rub marks over time. These trails often connect nesting areas to food and water sources. You might notice these marks are accompanied by small amounts of dirt or debris that rodents pick up as they move around.

Check areas where walls meet floors, around pipes and utility lines, and in corners where rodents feel safest traveling. The presence of these marks indicates not just a visit from a rodent, but an established traffic pattern in your home.

Sign #5: Nests and Nesting Materials

Rodents build nests in hidden, secluded spots where they feel protected. These nests are typically made from shredded materials the rodents collect from around your home. Common nesting materials include:

  • Shredded paper, newspaper, or cardboard
  • Fabric torn from clothing, upholstery, or linens
  • Insulation pulled from walls or attics
  • Plant materials like dried grass or leaves brought in from outside

Look for nests in areas that are dark, warm, and rarely disturbed. Attics, basements, crawl spaces, inside wall voids, behind appliances, and in storage boxes are all prime nesting locations. Mouse nests are smaller, roughly the size of a softball, while rat nests can be considerably larger.

If you discover a nest, avoid touching it directly. Rodent nests can harbor diseases and parasites that pose health risks to humans.

What Should You Do If You Spot These Signs?

Finding evidence of rodents in your home can feel overwhelming, but taking quick action helps prevent a small problem from becoming a major infestation. First, try to identify where rodents might be entering your home by checking for gaps around pipes, cracks in your foundation, and openings around doors and windows.

While DIY traps might catch a few mice or rats, they rarely address the full scope of an infestation. Rodents reproduce quickly—a single mouse can have 5 to 10 litters per year with up to 14 babies each time. Professional help ensures that the entire population is addressed and that entry points are properly sealed to prevent future problems.

Professional pest control also involves identifying the specific type of rodent in your home, which determines the most effective treatment approach. Residential pest control services can provide ongoing monitoring to ensure rodents don't return after the initial treatment.

Take Control of Your Rodent Problem Today

Rodent infestations won't resolve themselves, and waiting only allows populations to grow and damage to worsen. If you've noticed any of the warning signs discussed in this article, it's time to take action and protect your home and family.

American Pest Control provides comprehensive rodent control services throughout Georgia, Western North Carolina, and Upstate South Carolina. Our experienced technicians will inspect your property, identify the extent of your rodent problem, and implement solutions tailored to your specific situation.

Don't let rodents take over your home—call (706) 546-1490 or complete our online contact form to schedule your inspection today.

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