Rodent Control in Southeastern NC & Northeastern SC
Mice and rats are among the most common and most unwelcome pests homeowners encounter in southeastern North Carolina and northeastern South Carolina. They're resourceful, adaptable, and remarkably good at finding their way into homes, particularly during the cooler months when they're seeking warmth, food, and shelter. Once inside, rodents aren't just a nuisance. They contaminate food with droppings and urine, chew through electrical wiring (creating a real fire hazard), damage drywall and insulation, and can carry diseases including hantavirus, leptospirosis, and salmonella.
McDuffie Pest Control can identify the species, locate the entry points, and build a plan to eliminate the problem and keep it from coming back. Whether you're dealing with a single sighting or a full infestation, our technicians will recommend the right approach based on the rodent species, your property type, and the extent of any current activity.
Common Rodent Species in the Carolinas
The species you're dealing with matters because mice and rats behave differently, nest in different areas, and require different treatment approaches. Knowing what to look for helps you catch a problem early, before a few visitors become a full infestation.
- Field Mice (Deer Mice and House Mice): The most common rodent in our service area, particularly in rural and suburban communities. Small (2.5 to 3.75 inches, not counting the tail), gray or light brown with lighter bellies, and large ears relative to their body. A single female can produce up to 36 offspring per year. They nest in wall voids, attic insulation, stored boxes, and behind appliances.
- Norway Rats: The larger of the two common rat species, brownish with a lighter underside, stocky bodies, and blunt noses. Adults can reach 10 to 15 inches including the tail. Norway rats are burrowers that prefer ground-level or below-ground harborage: crawl spaces, basements, burrows along foundations, and sewer systems. They're cautious and slower to investigate new objects.
- Roof Rats: Slightly smaller and more slender than Norway rats, dark brown to black, with pointed noses and tails longer than their bodies. Roof rats are excellent climbers that nest in attics, ceiling voids, and upper levels of structures, accessing homes through rooflines, utility lines, and overhanging branches. More common in coastal areas and increasingly present in the Brunswick County and Grand Strand markets.
Mice vs. Rats: Why the Difference Matters
People often use "mice" and "rats" interchangeably, but they're distinct animals with different behaviors, and the difference matters for treatment. A treatment plan designed for mice may not work on rats, and vice versa.
Mice
Mice are small, curious, and quick to explore new food sources and entry points. They can fit through a gap the size of a dime, breed year-round indoors, and nest in wall voids, insulation, and stored items. Their droppings are small and pointed — roughly the size of a grain of rice — and their behavior makes them easier to trap than rats.
Rats
Rats are significantly larger, more cautious, and slower to investigate new objects — which is why trapping them requires more patience. Norway rats burrow at ground level in crawl spaces, basements, and along foundations, while roof rats climb and nest in attics and ceiling voids. Rat droppings are noticeably larger with blunt ends, and entry holes will be sized accordingly.
| Feature | Mice | Rats |
|---|---|---|
| Body Size | 2.5 to 3.75 inches | 7 to 15 inches |
| Tail | Thin, hairy, about body length | Thick, hairless with scales; shorter than body (Norway) or longer (roof) |
| Ears | Large relative to head | Smaller relative to head |
| Droppings | Small, pointed, about the size of a grain of rice | Larger, blunt-ended, about 3/4 inch |
| Behavior | Curious, explores new objects quickly | Cautious, avoids new objects for days |
| Nesting Location | Wall voids, insulation, stored items | Ground-level burrows (Norway) or attics and upper areas (roof) |
| Minimum Entry Size | Gaps as small as a dime | Openings as small as a quarter |
Not sure what you're dealing with? Contact us and our team will identify the species and walk you through the right approach for your situation.
Signs of Rodent Activity
Rodents are nocturnal and avoid humans, so you may never see one directly. Instead, watch for these indicators. If you're noticing multiple signs, the problem is likely bigger than what's visible — a single pair of mice can produce dozens of offspring in a year, and those offspring begin breeding within weeks of birth.
- Droppings along walls, inside cabinets, in pantries, and under sinks — the most common first sign of rodent activity
- Gnaw marks on drywall, food packaging, baseboards, and wood — fresh marks are lighter in color and darken over time
- Chewed electrical wiring inside wall voids, attics, or crawl spaces — a serious fire hazard and one of the most dangerous consequences of an infestation
- Grease marks (rub marks) along baseboards, walls, and around entry points — left by the oils in rodents' fur as they travel the same paths repeatedly
- Scratching and scurrying sounds in walls, ceilings, or under floors, especially at night
- Nesting material such as shredded paper, fabric, or insulation gathered in hidden spots, or a stale, ammonia-like odor from accumulated urine in enclosed spaces
If you notice any of these signs, don't wait. A small problem can escalate into a full infestation within a matter of weeks.
Protect Your Home from Rodents
Prevention starts with removing the conditions that attract rodents in the first place. Seal entry points — mice can fit through a gap the size of a dime, and most homes have far more potential entry points than homeowners realize. Inspect your foundation, siding, utility penetrations, door sweeps, and vent covers for gaps, and seal them with steel wool, hardware cloth, or caulk. Store pantry items in hard-sided, airtight containers, clean up crumbs and spills promptly, and don't leave pet food out overnight. Reduce harborage by clearing clutter in garages, attics, and storage areas, keeping firewood at least 20 feet from the house, and trimming vegetation away from the foundation.
Don't rely on traps alone. Store-bought traps catch individuals but don't address the colony or the entry points that allow new rodents in. If you're trapping and the problem keeps returning, professional exclusion work — sealing every gap, crack, and opening — is what turns trapping from a temporary fix into a lasting solution. Damp crawl spaces also attract rodents as well as the insects they feed on; pairing rodent control with moisture and crawl space services provides even stronger defense.
If rodents have found their way into your home, McDuffie Pest Control can identify the species, locate the entry points, and build a plan to eliminate the problem and keep it from coming back. Contact us today to schedule a free inspection.
Schedule a Free Inspection
Frequently Asked Questions
Can rodents make my family sick?
Yes. Rodents carry bacteria and viruses that can be transmitted through droppings, urine, contaminated food, and even airborne particles from dried waste. Hantavirus, leptospirosis, and salmonella are all associated with rodent infestations. Rodent dander and droppings are also documented allergens and asthma triggers, particularly for children.
How do I know if I have mice or rats?
Droppings are usually the easiest way to tell. Mouse droppings are small and pointed, roughly the size of a grain of rice. Rat droppings are noticeably larger (about 3/4 inch) with blunt ends. You can also look at entry point size: very small holes suggest mice, while larger openings point to rats. If you hear activity overhead in the attic, roof rats are a likely culprit. Ground-level and crawl space activity is more typical of Norway rats or mice.
Why do I keep catching mice but the problem won't go away?
The most common reason is unsealed entry points. You're trapping the rodents that are already inside, but new ones keep coming in through the same gaps. A mouse can squeeze through an opening the size of a dime, and most homes have far more potential entry points than homeowners realize. Professional exclusion work — sealing every gap, crack, and opening — is what turns trapping from a temporary fix into a lasting solution.
Do rodents cause house fires?
They can. Rodents gnaw on electrical wiring inside wall voids, attics, and crawl spaces to wear down their continuously growing teeth. Damaged wiring is a documented cause of residential fires. If you're experiencing unexplained electrical issues or have confirmed rodent activity in your home, having the wiring inspected is a worthwhile precaution.
