Spider Exterminator Service for Basements, Garages and Eaves

Most spiders in a Jersey house are a nuisance, not a hazard

Rutgers Cooperative Extension fact sheet FS1121, Spiders of Medical Importance, puts spider bites in perspective. Of roughly 38,000 known spider species, about 100 have venom that is harmful to people, and in North America only the widow spiders and the recluse spiders are considered dangerous. Rutgers adds that spiders seldom bite people; bites usually happen when a spider is trapped against the skin or handled.

That is why most of the spider work we do is about webs, egg sacs, and sheer numbers in places people use every day, rather than about danger. A finished basement draped in cobwebs or a deck railing laced with orb webs every morning is reason enough to call.

Three spiders worth knowing by sight

Black widow: red marks on the underside

Rutgers describes the southern black widow as black with red triangular marks, often shaped like an hourglass, on the underside of the abdomen. Mature females are nearly half an inch long, and males are about half that. Its range runs from southern New England to eastern Mexico. Outdoors it hides under stones, in firewood piles, under decks, in stumps, and in rodent burrows; indoors it uses garages, basements, and crawl spaces. The CDC notes black widows are most common in the southern and western United States and tend to live in undisturbed spots such as woodpiles, eaves, fences, and debris.

Yellow sac spider: silk retreats in ceiling corners

This small yellow spider, under about three eighths of an inch, is more common outdoors under bark, in leaf litter, under rocks, and behind shutters, according to Rutgers. Indoors it builds silk retreats in the corners where walls meet ceilings, and in basements and crawl spaces. It gets in through damaged screens, gaps around doors, vents, and on plant material carried inside. Rutgers says it is believed to cause more spider bites than any other spider in the United States, though the bites typically cause local redness and burning that lasts up to two days.

Brown recluse: a spider of the Midwest and South

The CDC places the brown recluse in the midwestern and southern United States and describes it as brown with a dark violin-shaped mark on its head and six eyes instead of eight. It is not a spider we expect to find in a typical Central Jersey home, and Rutgers points out that many skin problems, including bacterial infections and the bites of other insects and mites, get mistaken for recluse bites. If you think you have one, save the specimen in a jar for identification.

What draws spiders to basements, garages and window wells

Spiders settle where three things line up: shelter, quiet, and a steady supply of insects. Basements and garages provide all three. Boxes stacked against walls, firewood stored by the door, and shelves that are rarely moved give spiders places to build retreats and lay egg sacs. Floor drains, sump pits, and window wells can collect the small insects that wander in, which keeps a spider fed without ever leaving its corner.

Outside, porch lights and lit windows draw moths and other flying insects after dark, and webs tend to follow the food. Rutgers lists moving outdoor lighting away from the building as one of its prevention steps. Shrubs and vines touching siding make it easy for spiders to walk straight to the eaves.

How a spider exterminator visit runs

Our technician starts with a walk-through to see which spiders you have and where they are concentrated: one corner of the basement, the whole garage, or the outside walls and eaves. We look for egg sacs, the insects that are feeding them, and the openings they use to get indoors.

• Physical removal first. Rutgers recommends vacuuming or sweeping up spiders and webs, then sealing and discarding the vacuum bag right away. We knock down webs and egg sacs in the areas we treat.
• Targeted treatment of hiding spots. Rutgers notes that insecticide dust or spray can be applied to spider hiding places and webs. We focus on cracks, corners, sill plates, the inside of garage door frames, and the exterior band where the foundation meets siding, always following the product label.
• Eaves, soffits, and light fixtures. Exterior work concentrates on the shaded, sheltered spots where webs rebuild night after night.
• Entry points. We note gaps around doors, damaged screens, open vents, and utility penetrations you may want sealed.
• Precautions. Your technician will explain any steps to take before and after treatment, following the product label, including which areas to keep clear for a time.

Clutter, lighting and the insects spiders hunt

A lasting drop in spiders comes from making the house less useful to them. The Rutgers prevention list is practical: seal entry points, clear clutter and debris, trim vegetation that touches the structure, move outdoor lighting away from the building, and sweep away webs regularly. Storing seasonal items in sealed plastic bins instead of cardboard boxes, keeping firewood away from the foundation, and turning off porch lights that do not need to stay on overnight are small changes in the same direction.

Spiders often point to another pest. If the webs are full of ants, our ant control service may be the better first step, and in a basement with heavy spider activity it is worth asking what else is living down there.

When handling stored boxes or firewood, the CDC suggests wearing gloves and long sleeves and shaking out clothing, shoes, and towels that have been left in a garage or shed before using them. Rutgers advises getting medical care after a bite if sweating, swollen lymph nodes, or symptoms beyond the bite site develop.

Spider control in the towns around us

We handle spider calls across our service area, including Old Bridge, Sayreville, Piscataway, and Plainsboro. Homes that back onto woods or fields, or that have a lot of exterior lighting, may see more web building on the outside walls, so it helps to tell us in your request where the webs show up most.