Charleston and Mount Pleasant, SC, offer a warm, coastal environment that attracts a variety of wildlife, including rodents. These pests can pose health risks and cause structural damage to both residential and commercial properties. Knowing which rodent species are common in the region can help property owners take preventative measures to protect their homes and businesses from infestations.
Norway Rat (Rattus norvegicus)

The Norway rat, the brown or sewer rat, is one of the most common rodent species in urban areas like Charleston. These large, burrowing rodents prefer low-lying areas such as basements, sewers, and crawl spaces. They are highly destructive, gnawing on wires, wood, and insulation to maintain their ever-growing teeth. Norway rats are also notorious for contaminating food supplies with their droppings and urine, which can spread diseases such as leptospirosis and salmonella. Property owners should regularly inspect basements and exterior foundations for burrows and seal any openings to prevent infestations.
Roof Rat (Rattus rattus)

Roof rats, sometimes called black rats or ship rats, are excellent climbers and typically nest in attics, roofs, and trees. These rodents are smaller and more agile than Norway rats, allowing them to access higher areas of buildings. Roof rats are particularly problematic in coastal regions like Charleston, where they can quickly move between structures via tree branches and utility lines. They are known to damage electrical wiring and create nests in insulation, leading to potential fire hazards. Property owners should trim tree branches away from their homes to deter roof rats, inspect roofs for entry points, and secure attic vents.
House Mouse (Mus musculus)

The house mouse is a small but highly adaptable rodent that thrives in urban and rural environments. These mice are prolific breeders, capable of producing several litters per year. House mice typically seek shelter indoors, where they can find warmth and an abundant food supply. They often nest in walls, behind appliances, and storage areas, contaminating surfaces and food with droppings. Their presence can also aggravate allergies and asthma. Preventative measures such as sealing cracks, maintaining cleanliness, and storing food in airtight containers can help reduce the risk of house mouse infestations.
Cotton Rat (Sigmodon hispidus)

Cotton rats are commonly found in fields, grassy areas, and agricultural lands but can occasionally invade properties near these environments. They prefer dense vegetation and are less likely to enter buildings unless driven by extreme weather or food shortages. Cotton rats are larger than house mice but smaller than Norway and roof rats. While they are less common in urban settings, they can still cause damage to outdoor storage areas and gardens. Keeping lawns and vegetation well-maintained can discourage cotton rats from approaching residential and commercial properties.
Deer Mouse (Peromyscus maniculatus)

The deer mouse is typically found in rural and wooded areas surrounding Charleston and Mount Pleasant. These rodents are known carriers of Hantavirus, a potentially fatal respiratory disease. Deer mice often seek shelter in outbuildings, garages, and attics, where they build nests using shredded materials. Because of the serious health risks associated with deer mice, it is crucial to handle infestations with caution. Avoid direct contact with droppings and nesting materials, and consider professional pest control services to eliminate these pests from your property safely.
Eastern Gray Squirrel (Sciurus carolinensis)

Although not typically considered a pest, the Eastern gray squirrel is a tree-dwelling rodent that can cause issues when they invade attics or chew electrical wiring. Squirrels are abundant in Charleston, particularly in neighborhoods with mature trees. They often enter homes through damaged soffits, roof vents, and chimneys. Once inside, they can create nests in insulation and gnaw on structural components. Preventative measures include repairing roof damage, installing chimney caps, and trimming tree branches away from the home’s exterior.
Preventing Rodent Infestations
The variety of rodents found in the Charleston area highlights the importance of regular property maintenance and inspections. Effective prevention strategies include sealing entry points, maintaining clean and clutter-free environments, and managing food waste properly. Professional pest control services can provide tailored solutions for property owners facing persistent rodent issues to protect both homes and businesses.
Contact Low Country Pest Management at 843-896-2237 to schedule an inspection and learn more about our rodent prevention and control services.
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