Carpenter Ant: Carpenter ants are large black or reddish ants that become active in early spring. They are attracted to moist or decaying wood, which is more common after winter snow melts and spring rains. These ants do not eat wood but tunnel through it to build their nests, which can weaken wooden structures in homes. Their activity increases in April as temperatures rise, making it easier for them to forage for food and expand their colonies. You may notice them indoors, especially in kitchens or bathrooms where moisture is present.

Eastern Subterranean Termite: These termites are small, pale insects that live underground and feed on wood. In April, they begin their annual swarming season, where winged termites leave their colonies to start new ones. The moist soil and warming temperatures create ideal conditions for their activity. Swarmers are often seen near windows or light sources, and their presence is a sign of a nearby colony. They can cause significant structural damage if left unchecked, as they consume wood from the inside out.

Black Rat: Black rats, also known as roof rats, are agile rodents that often enter homes in search of food and shelter as the weather warms. They are excellent climbers and can access attics, roofs, and upper floors. In April, their activity increases as they seek nesting sites and food sources after winter scarcity. Black rats can contaminate food, spread diseases, and cause damage by gnawing on wires and insulation. Their droppings and urine can also create health hazards indoors.

House Mouse: House mice are small, grayish rodents that become more noticeable in spring. As outdoor food sources become available, they may move between indoor and outdoor environments. In April, they are often found in kitchens, basements, and storage areas, searching for crumbs and nesting materials. House mice reproduce quickly, and their presence can lead to contamination of food and surfaces. They are also known to chew on wires, which can create fire risks.

Cluster Fly: Cluster flies are larger than common houseflies and are often found in attics or upper rooms. In early spring, they emerge from their overwintering sites inside homes to return outdoors. April’s warmer temperatures trigger their activity, and you may see them sluggishly flying around windows as they try to escape. While they do not bite or damage property, their presence can be a nuisance, and dead flies can attract other pests.

Tick: Ticks are small, blood-feeding parasites that become active as soon as temperatures rise above freezing. In April, they are commonly found in grassy, wooded, or brushy areas. They latch onto pets, wildlife, or humans passing by. Ticks are a concern because they can transmit diseases such as Lyme disease. Their increased activity in spring is due to the return of wildlife hosts and the start of outdoor activities by people and pets.

Boxelder Bug: Boxelder bugs are black insects with red or orange markings. In spring, they emerge from cracks and crevices where they spent the winter. April’s warmth draws them out, and they often gather on sunny exterior walls or windows. While they do not bite or cause structural damage, they can stain surfaces with their excrement and become a nuisance when they enter homes in large numbers.