Pest-Proof Your Home Before Winter

Every fall, the same thing happens across Long Island: the first cold nights arrive, and mice, rats and wildlife start looking for a warm place to spend the winter — your attic, walls and basement. Rodent calls climb all winter long. A weekend of proofing now is what keeps your home off that list.

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Galvanized mesh exclusion barrier installed along a home foundation to seal rodents out — Mesh exclusion sealing along the foundation line

The checklist

8 proofing jobs that keep winter pests out

Seal the foundation gaps. Walk the foundation and seal every gap around pipes, vents and utility lines with a chew-proof barrier — galvanized or copper mesh set in and sealed, not foam alone. A mouse needs a gap only about the width of a dime.
Fit door sweeps. Daylight under an exterior or garage door is an open door to rodents. Fit sweeps and replace a worn garage-door bottom seal before the cold sets in.
Screen the vents, cap the chimney. Attic, gable and dryer vents and an open chimney are high entries for squirrels, raccoons and birds. Sturdy mesh screening and a sound chimney cap close them without blocking airflow.
Store food like you mean it. Pantry goods, pet food and bird seed go in sealed, hard containers — not bags a mouse can chew through in a night. This applies in the garage and basement too, not just the kitchen.
Move the firewood. A woodpile stacked against the house is winter housing for rodents and insects, with a covered walkway straight to your foundation. Stack it away from the house and off the ground.
Clear the edges. Leaf litter, mulch piled against the siding and clutter along the foundation give pests cover right up to the wall. Pull it back, and declutter the attic and basement corners where nests start.
Fix the drips. Rodents and insects both follow water. Repair leaking spigots, dripping pipes and damp basement corners before winter — a dry house is a much less interesting house.
Trim branches off the roof. Limbs touching or overhanging the roof are a bridge for squirrels and raccoons. Cut them back so nothing can walk straight onto the roofline.

Work top to bottom: roofline and vents first, then doors and foundation, then food and yard. Most homes take a weekend; the sealing work is the part that decides whether the rest matters.

Where to check

The five doors winter pests use

The foundation. Gaps where pipes, cables and oil lines pass through the wall, and cracks where the siding meets the foundation. The roofline. Soffits, fascia and gable vents — the high road in for squirrels and raccoons. Doors and the garage. Worn sweeps and a garage door that does not seal at the corners. The chimney. An uncapped flue is a warm, sheltered shaft straight into the house. The yard itself. Firewood, leaf litter and dense shrubs against the house stage pests at the wall, one short dash from a gap.

Common mistakes

What proofing cannot do on its own

Proofing keeps new pests out — it does nothing about the ones already in. If you are already hearing scratching or finding droppings, removal comes first and sealing second; our rodent control service does both in that order. Proofing also fails when the materials are wrong: a sealed gap that a mouse can chew through in a night is not sealed at all.

What not to do: do not seal holes before any animals inside are out — you will trap them in the walls. Do not rely on expanding foam alone; rodents chew straight through it. And do not rely on poison by itself outdoors — it does not close a single gap, and the next animal uses the same door.

When to call

Call a licensed exterminator when…

You find entry gaps you cannot reach or identify, hear activity before you have finished proofing, find droppings in more than one area, or want the whole job inspected and sealed in one visit. Supra inspects the attic, crawl space, foundation and roofline, seals the entry points in chew-proof materials, and removes anything already inside. For ongoing cover, our plans run monthly from $90 or quarterly from $180 and include checking the seals and entry points we monitor. We serve Nassau County and western Suffolk County from our base in Huntington Station.

Rodent control Emergency services Huntington Station

If pests return, so do we

Return visits at no additional charge. Licensed by the NY State DEC. Fully insured. Est. 2024 — the owners bring 25 years of industry experience.

(516) 667-3902

FAQ

Common questions

When should I pest-proof my home for winter?

In the fall, before the first hard frost — that is when mice, rats and wildlife start looking for a warm way in. But it is never wasted effort: sealing entry points in early winter still stops the second wave that arrives with the coldest weather in January and February.

What is the most common way rodents get into a house?

Small gaps at the foundation and roofline — around pipes, vents and utility lines, under doors, and where the siding meets the foundation. A mouse needs a gap only about the width of a dime, so the opening usually looks too small to matter.

Can I just use expanding foam to seal the gaps?

Foam alone will not hold — rodents chew straight through it. Gaps need a chew-proof barrier: galvanized mesh, copper mesh or sheet metal, set into the opening and then sealed. That is the material we install on proofing and rodent jobs.

Do you offer a year-round plan that includes proofing checks?

Yes. Our pest control plans run monthly from $90 or quarterly from $180, and visits include checking the entry points and seals we monitor, so a new gap gets caught before it becomes an infestation.