OCP

Black Widows or Too Many Spiders? We Treat the Whole Property.

Los Angeles has one of the highest black widow spider densities in the country. Western black widows are common in garages, storage areas, and yard debris. We eliminate dangerous spiders and reduce overall spider pressure throughout your property.

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Licensed · Insured · LA-Based

Signs You Have a Problem

  • Irregular, messy, three-dimensional webs low to the ground — near the floor in garages, in storage boxes, under outdoor furniture, in wood piles, and inside meter boxes — characteristic of black widow spiders (Latrodectus hesperus)
  • Visible black widow spiders — shiny black, bulbous abdomen, approximately 1.5 inches in leg span, with the characteristic red hourglass marking on the underside of the abdomen — in garage corners, under outdoor chairs, or in cluttered storage areas
  • Brown recluse indicators — irregular webs in dark undisturbed areas such as closets, attics, cardboard boxes, and inside shoes or clothing left undisturbed for extended periods (note: brown recluse are not widespread in LA but occasional specimens are found)
  • Large cellar spider (Pholcus phalangioides) populations in garages, basements, and crawl spaces — while harmless, heavy cellar spider infestations indicate conditions (insects, moisture) that attract more dangerous spider species
  • Spider egg sacs — papery, round or irregular sacs attached to webs, walls, or inside corners — each sac can contain 50–400 eggs and rapid population growth follows egg sac hatching
  • Numerous orb weaver webs in yard vegetation, under eaves, and around exterior lighting — heavy orb weaver populations indicate a high insect food source and usually spike after warm, wet periods or near properties with significant outdoor lighting

Our Treatment Process

  1. 1

    Spider Species Assessment and Risk Mapping

    We inspect the property with particular focus on black widow habitat — garage perimeters and storage areas, meter boxes, wood piles, under outdoor furniture, in pool equipment areas, and in any low, dark, undisturbed voids. We identify black widow activity, map web and egg sac locations, and assess the overall spider population. We note any conditions creating high insect food availability that sustain elevated spider populations.

  2. 2

    Web and Egg Sac Removal

    Physical removal of webs and egg sacs is the first treatment step. Removing egg sacs before they hatch dramatically reduces the next generation of the population. We use long-handled dusters and vacuums to remove webs, spiders, and egg sacs from garage perimeters, storage areas, eave voids, and yard structures. Physical removal is more immediately effective than chemical treatment alone for reducing the visible population.

  3. 3

    Residual Insecticide Application

    We apply residual insecticides to the areas where black widows and other spiders harbor and travel — garage wall perimeters at floor level, exterior foundation band, under exterior furniture, wood pile periphery, utility boxes, and any other identified spider harborage. Residual products are selected for long dwell time on porous surfaces where spiders walk, ensuring contact-kill of spiders encountered weeks after treatment.

  4. 4

    Exterior Lighting Consultation

    Exterior lighting — particularly white incandescent or older fluorescent fixtures — attracts insects at night, which in turn attracts spiders to feeding positions near light fixtures. We advise on switching exterior lights to yellow or sodium vapor bulbs (which attract far fewer insects) to reduce the insect food source that sustains large spider populations around homes.

How to Prepare for Treatment

  • Wear thick gloves when moving storage boxes, wood piles, or other items in garages or storage areas before or after our treatment — do not reach blindly into dark corners or under items
  • Clear clutter from garage perimeters and storage room floors before our visit — spiders harborage in clutter, and technicians need access to the floor perimeter and wall bases where black widows build webs
  • Remove items from under outdoor furniture, decks, and patio areas so technicians can treat underneath without obstruction
  • Shake out shoes, gloves, and clothing stored in garages or outdoor areas before wearing — this is a permanent safety practice in black widow territory
  • Keep children and pets out of treated areas for at least 2 hours after application until surfaces are dry

After Treatment: What to Expect

  • Wear gloves whenever handling items from garages, storage areas, or outdoor structures — residual treatment reduces spider populations but does not provide instant-elimination guarantees for every individual spider
  • Reduce clutter in garages and storage areas — boxes, wood piles, and stored materials provide ideal black widow habitat and make retreatment more difficult
  • Keep wood piles stored away from the structure and elevated off the ground — wood stored against the exterior wall is a primary black widow harborage that creates continuous pressure into the garage
  • Seal gaps in garage door weatherstripping and around utility penetrations to reduce spider entry from the exterior
  • Schedule annual or semi-annual maintenance treatment in black widow-heavy areas — in LA's climate, black widow populations recover quickly in undisturbed exterior areas and routine treatment maintains population suppression

Spider Control — Frequently Asked Questions

Western black widows (Latrodectus hesperus) are venomous and their bites can cause latrodectism — severe muscle cramping, pain, sweating, and nausea — requiring medical attention and sometimes hospitalization, particularly in children, elderly individuals, and those with compromised health. Fatalities are rare with modern medical care, but black widow bites are a genuine medical emergency. Los Angeles properties, particularly those with garages, storage areas, and mature landscaping, commonly harbor significant black widow populations.

True brown recluse (Loxosceles reclusa) are not native to California, but the desert recluse (Loxosceles deserta) and Chilean recluse (Loxosceles laeta) are present in parts of Southern California and Los Angeles County. Recluse spiders are uncommon compared to black widows but their bites can cause necrotic skin wounds. If you find a spider you believe may be a recluse species, photograph it and contact us — we can assist with identification and targeted treatment if warranted.

Garages in Los Angeles provide near-ideal black widow habitat: undisturbed dark corners, low foot traffic, storage clutter that creates web attachment points, and abundant prey insects attracted to the garage environment. Garage door gaps, utility penetrations, and plumbing access points provide easy entry. In LA's mild year-round climate, black widow populations in garages do not experience the winter die-off that limits populations in colder climates, allowing them to build up significantly over time.

Yes — our residual perimeter treatment kills many of the insects that constitute spider food, which reduces the food supply available to sustain a large spider population. However, direct insect source reduction (sealing entry points, reducing exterior lighting attractiveness, addressing moisture) is the most durable way to reduce both insect and spider populations simultaneously. We often combine spider treatment with a general perimeter pest inspection to address the food chain that sustains spider populations.

Need Spider Control in Los Angeles?

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