Carpenter Ant

Carpenter ants are large black or reddish ants that become active as temperatures rise in early spring. They are attracted to moist or decaying wood, which is more common after winter snow melts and rain increases moisture levels. These ants do not eat wood but tunnel through it to build their nests, which can weaken wooden structures in homes. Their activity indoors often signals a nearby nest, especially in areas with water damage. March is when they start foraging for food and expanding their colonies after winter dormancy.

Black Rat: Black rats, also known as roof rats, are agile rodents that often seek shelter indoors as the weather transitions from winter to spring. They are excellent climbers and prefer to nest in attics, walls, and upper levels of buildings. As outdoor food sources are still scarce in March, black rats are more likely to invade homes in search of food and warmth. Their presence can be identified by droppings, gnaw marks, and scratching noises, especially at night. They can carry diseases and contaminate food supplies, making them a significant concern during this time.

Eastern Subterranean Termite: These termites begin their swarming season in early spring, often starting in March. Swarming is when winged termites leave their colonies to mate and start new colonies, which is triggered by warming temperatures and increased moisture. They feed on wood, paper, and other cellulose materials, causing structural damage over time. Signs of their presence include mud tubes on foundations, discarded wings, and damaged wood that sounds hollow when tapped. Their activity increases as the ground thaws and becomes easier to tunnel through.

Cluster Fly: Cluster flies are larger than houseflies and are known for gathering in large numbers inside homes during cooler months. In March, as temperatures rise, they become more active and try to exit buildings to return outdoors. They often congregate around windows and sunny areas, creating a nuisance for homeowners. Cluster flies do not breed indoors or cause structural damage, but their presence in large numbers can be bothersome. Their life cycle is tied to earthworms, which become more active as the soil warms in spring.

Boxelder Bug: Boxelder bugs are black insects with red or orange markings that overwinter in wall voids, attics, and other protected areas. As the weather warms in March, they emerge from hiding and try to move outdoors. They are often seen on sunny sides of buildings or around windows. While they do not cause structural damage or bite, their droppings can stain surfaces, and their presence in large numbers can be unpleasant. Their activity is closely linked to the warming temperatures and the budding of boxelder and maple trees.

Brown Marmorated Stink Bug: These shield-shaped bugs spend the winter hiding inside homes and become active as spring approaches. In March, they start to emerge from cracks, attics, and wall voids, seeking a way back outside. When disturbed, they release a strong, unpleasant odor as a defense mechanism. While they do not harm people or structures, they can be a nuisance due to their numbers and smell. Their movement is triggered by increasing daylight and warmer temperatures.

House Mouse: House mice are small rodents that remain active year-round but are especially noticeable in early spring. As snow melts and outdoor food sources are still limited, mice continue to seek shelter and food indoors. They can squeeze through tiny openings and are often found in kitchens, basements, and storage areas. House mice contaminate food, chew on wires and insulation, and can spread diseases. Their activity remains high in March as they prepare for breeding season, which starts in spring.