Fall on Long Island does not mean pest activity disappears. As nighttime temperatures drop, homeowners often begin hearing scratching in the walls, finding crickets in the basement, noticing spiders indoors, or discovering insects around windows and doors. Gaps along the foundation, worn door sweeps, openings around utility lines, damp areas, leaf buildup, and accessible food can all make it easier for pests to settle around—or inside—the home.
This guide will help you identify the fall pests Long Island homeowners commonly encounter, inspect the areas where they may be getting inside, and know when prevention is still possible versus when an active pest problem needs professional attention.
Fall pest activity does not look the same in every home. The location of the property, surrounding landscaping, moisture levels, and available entry points all affect what may show up. These are some of the pests we commonly hear about as the weather changes.
Rodent activity often becomes more noticeable during fall as mice and rats search for dependable food, shelter, and nesting areas. Homeowners may hear movement inside walls or ceilings, find droppings in kitchens and basements, or notice damaged food packaging. Because the opening may be far from where those signs appear, effective mouse and rat control should include inspecting how rodents are entering and traveling through the home—not simply placing traps where one was seen.
House and field crickets may enter through doors, basement windows, and foundation gaps. Camel crickets—also called cave crickets or spider crickets—prefer dark, damp areas such as basements, crawl spaces, garages, and utility rooms. When sightings or nighttime chirping continue, professional cricket control can help identify the type of cricket and where treatment should be focused.
Spiders may become more noticeable indoors during late summer and fall, particularly in basements, garages, storage rooms, windows, and quiet corners. Their presence can also point to other insect activity nearby because those insects provide a food source. Effective spider control therefore involves looking beyond the visible webs and considering what may be attracting spiders to that part of the home.
Stink bugs, boxelder bugs, and Asian lady beetles often gather on sun-warmed exterior walls before finding small openings around windows, siding, vents, and rooflines. Cornell Integrated Pest Management notes that fall pests can enter through cracks, open doors, damaged screens, and even firewood brought indoors, making exterior maintenance an important part of preparing for fall pests.
A fall pest inspection can begin with a slow walk around the outside of your home. Start at the foundation and look upward instead of checking only the doors and windows you use every day.
Foundation openings: Look for cracks, damaged vents, missing mortar, and gaps where the foundation meets the siding.
Utility lines: Check around pipes, electrical wiring, cable lines, air-conditioning lines, and other penetrations entering the house.
Exterior doors: Look beneath door sweeps and around frames for visible light or gaps. Include garage doors, basement entrances, and side doors.
Basement windows: Examine the frames, screens, window wells, and edges where the window meets the foundation.
Siding and roofline: Look for loose siding, damaged soffits, uncovered vents, and openings along the eaves.
Attached structures: Inspect where decks, porches, steps, additions, and garages connect to the main structure.
Vegetation and debris: Move leaves, stored materials, dense plants, and other sheltered hiding areas away from the foundation when practical.
Do not automatically seal every opening if you are already hearing scratching or seeing rodent droppings indoors. Closing an active entry point without addressing the rodents first can trap them inside or force them into another part of the house. In that situation, the activity should be assessed before exclusion work begins.
Sealing exterior openings is only part of fall pest prevention. Once mice, cockroaches, crickets, or other pests get inside, accessible food, water, and undisturbed hiding places can allow them to remain—even in a clean home.
Store cereal, rice, flour, snacks, pet food, grass seed, and birdseed in containers with secure lids. Clean beneath appliances and inside lower cabinets where crumbs can collect unnoticed. Avoid leaving pet food out overnight, and make sure indoor garbage containers close properly.
Moisture also matters. Repair leaking pipes, check for condensation, and use a dehumidifier when basements or crawl spaces remain damp. Cardboard boxes, paper bags, and crowded storage areas provide hiding places, so move stored belongings into sealed plastic containers when practical and keep them raised off basement or garage floors.
Prevention helps reduce the chance of pests entering, but it does not remove an infestation that is already active. If you are hearing scratching, finding droppings, seeing crickets repeatedly, or noticing insects in the same rooms, document where and when the activity is happening.
Take clear photographs of insects, droppings, damaged materials, or possible entry points when possible. Avoid spraying random areas or moving traps before an inspection, since the location of that evidence can help an exterminator understand how pests are traveling through the home.
For rodent droppings, do not sweep or vacuum them while they are dry. The CDC recommends wetting and disinfecting rodent waste before removing it because sweeping or vacuuming can send contaminated particles into the air. Follow the CDC’s complete instructions for cleaning up after rodents, especially if droppings or nesting materials are present in more than one area.
You do not necessarily need professional treatment because one insect wandered through an open door. An inspection becomes more useful when the activity suggests that pests are entering repeatedly, hiding inside the structure, or establishing themselves in the home.
Consider calling a pest-control company when:
A professional inspection should identify the pest, determine where activity is concentrated, and explain what needs to be treated or corrected before any work begins.