Spiders are a symptom. They're there because something else is.
Spiders are predators, and they settle where prey is available. A house with a persistent spider presence usually has a persistent insect presence first — often around exterior lighting, in a damp basement, or along a soffit line full of flies. We treat the spiders, but we also address what's feeding them, because that's what keeps them from returning.
What we look at on a spider call
Web type and location tell us the species, and species tells us the approach.
- Cobwebs in corners and ceiling anglesTypically cellar spiders or common house spiders. Harmless, persistent, and usually a sign of steady small-insect availability indoors.
- Funnel webs in shrubs and window wellsGrass spiders build sheet webs with a retreat tunnel. Very common in Long Island landscaping and often mistaken for something more concerning.
- Orb webs across doorways and eavesSeasonal garden and orb-weaver spiders, most conspicuous in late summer and fall. Startling to walk into, but not a structural or health concern.
- Concentration near exterior lightsPorch and floodlight fixtures draw insects all night, and spiders set up where the food is. This is the single most common driver of an exterior spider complaint.
- Basement and crawl space activityCool, damp, undisturbed spaces with insect traffic. Cellar spiders in particular thrive here and can build up quickly.
- Egg sacsSilk sacs in corners, under sills, and in undisturbed storage areas. Removing these matters as much as treating adults, since each sac can contain dozens of spiderlings.
How we handle spiders
- Identify what's presentLong Island has very few medically significant spiders. Correct identification usually reduces the alarm considerably, and it tells us whether we're dealing with a web-builder or a hunter.
- De-web mechanicallyWebs, egg sacs, and retreats removed from eaves, soffits, window frames, porch ceilings, and light fixtures. This is physical work and it matters more than any product.
- Find and address the prey sourceStanding water, exterior lighting attracting insects at night, gaps letting flies into a soffit, moisture in a crawl space. Removing the food supply is what makes the result last.
- Targeted treatment at harborageApplications directed at entry points, sill plates, eaves, and voids where spiders shelter — not broadcast across surfaces where it accomplishes nothing.
- Seal the gapsDoor sweeps, window screening, and sealing around utility penetrations. Same exclusion work that keeps out the insects the spiders came for.
What lives here, and what doesn't
Homeowners frequently ask about brown recluse spiders. Brown recluse are not established on Long Island; their range sits well to the south and west, and confirmed New York specimens are almost always transported in on freight or luggage rather than living locally. Northern black widows do occur in New York but are uncommon on the North Shore and strongly prefer undisturbed outdoor sites — woodpiles, stone walls, and the backs of unused sheds. In practice, the overwhelming majority of what we're called about is a cellar spider, a house spider, or a grass spider.
The exterior lighting fix nobody mentions
If your spider problem concentrates around the front porch or the garage floodlight, changing the bulbs will do more than any treatment. White and blue-rich light draws flying insects from a substantial distance. Warm-toned LEDs at 2700K or below, or amber bug-rated bulbs, attract markedly fewer insects — and fewer insects means fewer spiders setting up shop. It costs less than a service call.
Fall is when you'll notice them
Spiders don't invade in autumn so much as become conspicuous. Many species reach full adult size by late summer, and males wander in search of mates, which is when they turn up in bathtubs and on ceilings. The population has been there all season; it simply got large enough to see. A late-summer exterior service ahead of that window is the most effective timing.
Where we provide this service
Northport, East Northport, Huntington, Halesite, Centerport, Greenlawn, Cold Spring Harbor, Fort Salonga, and the surrounding North Shore communities. See all service areas.
Not sure what you're dealing with?
Send a photo by text and we'll tell you what it is. Identification is free, and it's the step that determines everything else.