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Common January Pests in Massachusetts and Connecticut and How to Prevent Them

Written by Paul Olesuk | Jan 15, 2026 2:15:00 PM

January pest problems in the Northeast are predictable.Knowing what pests are active and why it helps homeowners take the right stepsto protect their homes during winter.

Mice and Rats

Rodents are the most reported winter pest in Massachusettsand Connecticut. Cold weather drives them indoors where they can reproducequickly.

Common signs include droppings, scratching noises at night,and chewed food packaging. Entry points can be as small as a dime, makingprevention difficult without professional inspection.

Prevention tips:

    • Seal cracks and gaps
    • Store food in sealed containers
    • Reduce clutter in basements and garages

Cockroaches

Cockroaches seek warmth and moisture in winter. Januaryinfestations often occur in kitchens, bathrooms, and basements.

Roaches are resilient and can survive long periods withoutfood. Their presence increases health risks due to bacteria and allergens.

Prevention tips:

    • Fix leaks promptly
    • Keep food areas clean
    • Reduce humidity in basements

Ants

Winter ant sightings surprise many homeowners. Ant coloniescan remain active inside wall voids and heated spaces.

If ants appear in January, it often indicates a hidden nestinside the structure rather than an outdoor issue.

Prevention tips:

    • Eliminate food sources
    • Address moisture issues
    • Avoid using store bought sprays that scatter colonies

Termites

Termites do not stop feeding in winter. They remain activeunderground and inside wood structures.

January is an ideal time for inspections because termiteactivity is easier to identify before spring swarm season.

Prevention tips:

    • Schedule annual termite inspections
    • Reduce wood to soil contact
    • Address moisture near foundations

Overwintering Insects

Stink bugs, boxelder bugs, and lady beetles often appearindoors during winter after entering homes in fall.

While mostly a nuisance, their presence indicates entrypoints that other pests can also use.

Prevention tips:

    • Seal exterior gaps
    • Repair screens and vents
    • Reduce attic and wall access points

Why Prevention Is Better Than Reaction

January pest control focuses on stopping infestations beforethey expand. Once pests settle in, they are harder and more expensive toeliminate.

Professional pest management targets the source of theproblem rather than just visible pests.