Spider Exterminator Cost: $100 to $300 (2026)

Last updated: March 18, 2026

By Pest Control Pricing Team

Spider exterminator costs range from $100 to $300 for a one-time treatment, with the national average around $175. Ongoing pest control plans that include spider treatment cost $40 to $70 per monthly visit. The total cost depends on the spider species, treatment method, home size, and whether the spiders are venomous.

This guide breaks down spider extermination costs by species, treatment method, and service type so you know what to expect before hiring a professional. For a broader look at pest control pricing, see our pest control cost guide.

Cost by Spider Type

The spider species determines the treatment approach and cost. Venomous spiders require more thorough treatment, including inspection of hiding spots and often multiple follow-up visits.

Brown recluse and black widow treatments cost more because these spiders hide in hard-to-reach areas (wall voids, cluttered storage spaces, behind furniture) and their presence requires a more thorough inspection and treatment process. Multiple visits are often recommended for venomous spider infestations.

Cost by Treatment Method

Most professional treatments combine two or more methods. A typical visit includes perimeter spray, interior spray along baseboards and corners, web removal, and dust application in key areas. Exclusion is usually recommended as an add-on for long-term prevention.

Need a price estimate for your specific situation? Use our free pest control cost calculator or call (866) 821-0263 to connect with a licensed local exterminator.

Dangerous Spiders in the US

Only two spider species in the United States pose a genuine health risk. Understanding which spiders are actually dangerous helps homeowners make informed treatment decisions.

• Hobo spider: brown, often confused with the brown recluse. Found primarily in the Pacific Northwest. Previously classified as medically significant, but recent research suggests bites are not dangerous. No special treatment protocol needed.

All other common spiders in the US, including wolf spiders, house spiders, cellar spiders, jumping spiders, and garden spiders, are harmless. They may look alarming but pose no health risk. Brown recluse treatment is a common service call in Midwest cities like Cincinnati, where older homes with basements and crawl spaces provide ideal brown recluse habitat. If you are unsure what spider you are seeing, try our Pest Identifier.

Why You Have Spiders (and How to Fix the Real Problem)

Spiders go where their food is. A spider "infestation" almost always indicates an underlying insect problem. Addressing the insect population (ants, flies, moths, crickets) typically resolves the spider problem without specifically targeting spiders.

• Outdoor lighting attracts insects, which attracts spiders. Switching to yellow or sodium vapor bulbs, or moving lights away from doorways, reduces spider activity near entry points significantly.
• Moisture attracts insects, which attracts spiders. Fix leaky faucets, improve drainage around the foundation, and use dehumidifiers in basements and crawl spaces.
• Clutter provides hiding spots. Regular cleaning, vacuuming corners and ceilings, and removing webs discourages spiders from establishing residence.
• Gaps around doors and windows provide entry. Install door sweeps, repair torn screens, and seal gaps around utility penetrations.
• Dense landscaping near the foundation. Shrubs, mulch beds, and ground cover touching the house create pathways for spiders (and their prey) to reach the structure.

A general pest control plan ($40 to $70 per month) that targets insects will reduce spider populations more effectively than spider-specific treatment in most cases.

Spider Exterminator Cost by Treatment Type

One-Time vs Ongoing Treatment Costs

Most pest control plans include spider treatment as part of a general pest control service. You do not typically need a spider-only plan. A standard quarterly prevention plan covers spiders along with ants, cockroaches, and other common pests for the same price. For guidance on treatment frequency, see how often you should spray for pest control.

Cost Factors

• Spider species. Venomous spider treatments (brown recluse, black widow) cost 25% to 50% more than treatments for non-venomous species due to the extra thoroughness required.
• Home size. A larger home requires more product and more time. Homes over 2,500 square feet typically cost $25 to $75 more than smaller homes.
• Infestation severity. Seeing one or two spiders is normal. Finding dozens, multiple egg sacs, or extensive webbing indicates a larger population that requires more treatment.
• Location. Spiders in living spaces are easier to treat than those in attics, crawl spaces, or wall voids. Harder-to-reach infestations cost more.
• Geography. Brown recluse are concentrated in the central and southern U.S. Black widows are found in the South, West, and Southwest. Hobo spiders are common in the Pacific Northwest. Treatment demand and pricing reflect local species.

DIY vs Professional Spider Control

DIY spider control (retail sprays, glue traps, web removal) works well for occasional non-venomous spiders. Remove webs regularly, seal obvious entry points, reduce outdoor lighting (which attracts insects that spiders eat), and keep storage areas decluttered.

Professional treatment is recommended when you find venomous spiders, have a persistent problem despite DIY efforts, or see large numbers of spiders. Brown recluse infestations in particular require professional treatment because these spiders hide deep in wall voids and storage areas where consumer products cannot reach. For more on when professional help makes sense, see our guide on when to call an exterminator.

When Spider Control Is Medically Necessary

Most spiders are harmless and even beneficial (they eat mosquitoes, flies, and other pests). However, two species in the U.S. are medically significant:

• Brown recluse. Found primarily in the central and southern U.S. (Missouri, Kansas, Oklahoma, Texas, Arkansas, and surrounding states). Bites can cause necrotic skin lesions that require medical treatment. Brown recluse are reclusive and hide in undisturbed areas like closets, storage boxes, and behind furniture.
• Black widow. Found across the southern, western, and southwestern U.S. Bites cause severe pain, muscle cramps, and in rare cases require emergency medical attention. Black widows build messy webs in dark, sheltered areas like garages, sheds, and woodpiles.

If you find either of these species in your home, professional treatment is strongly recommended. Do not attempt to handle or relocate them. If bitten, seek medical attention promptly.

For a comparison of costs across all pest types, see our pest control cost guide. For ant-specific pricing, see our ant exterminator cost guide.

DIY Spider Control That Actually Works

For non-venomous spiders, several DIY methods provide effective control at minimal cost.

For brown recluse or black widow: DIY is not recommended. These spiders hide in deep wall voids and storage areas where consumer products cannot reach effectively. Professional treatment with insecticidal dust and targeted residual sprays is the safer and more reliable approach. For emergency guidance, see our pest emergency guide. For a broader comparison of DIY methods, see our DIY vs professional pest control guide.

What Does Professional Spider Treatment Include Step by Step?

Understanding what happens during a professional spider treatment helps homeowners evaluate quotes and know what to expect. A thorough spider treatment follows a standard process.

1. Inspection (10 to 15 minutes). The technician inspects the interior and exterior of the home to identify spider species, locate webs, egg sacs, and hiding spots, and assess the severity of the problem. They also look for the underlying insect population that is attracting spiders. Common inspection areas include basements, garages, attics, closets, crawl spaces, eaves, and window frames.
2. Web and egg sac removal (5 to 10 minutes). All visible webs and egg sacs are physically removed using extension poles with brush attachments. Removing egg sacs is critical because a single egg sac can contain 100 to 400 spider eggs depending on the species. Leaving egg sacs intact means hundreds of new spiders will hatch within weeks regardless of chemical treatment.
3. Exterior perimeter spray (10 to 15 minutes). A residual liquid insecticide (typically a synthetic pyrethroid such as bifenthrin, deltamethrin, or lambda-cyhalothrin) is applied along the foundation, around entry points (doors, windows, vents), under eaves, and along fence lines. This creates a chemical barrier that kills spiders and their prey on contact and continues working for 4 to 8 weeks.
4. Interior crack and crevice treatment (10 to 15 minutes). The technician applies product along baseboards, in corners, around window and door frames, behind appliances, and in other areas where spiders travel or hide. Application is targeted rather than broadcast, focusing on the specific areas where spiders are active.
5. Dust application in voids (5 to 10 minutes). Insecticidal dust (typically a desiccant like diatomaceous earth or a synthetic dust like DeltaDust) is applied into wall voids, attic spaces, and other enclosed areas using a hand duster. Dust lasts 6 to 12 months in undisturbed areas, providing long-term protection in the hidden spaces where spiders nest. This step is especially important for brown recluse treatment.
6. Exclusion recommendations. The technician identifies gaps, cracks, and openings where spiders and their prey enter the home. They may seal minor gaps during the visit or provide a list of exclusion work to be completed separately. Common recommendations include installing door sweeps, repairing torn window screens, sealing gaps around pipes and vents, and caulking cracks in the foundation.

A typical spider treatment visit takes 30 to 60 minutes for a standard home. Treated surfaces are safe for pets and children once the spray dries, which usually takes 30 to 60 minutes. The technician will provide specific instructions for your treatment.

What Are the Hidden Costs of Spider Treatment?

The quoted price for spider treatment does not always include every associated cost. Understanding these additional expenses prevents surprises.

• Follow-up visits ($75 to $150 each). One-time treatments include one visit, but venomous spider infestations often require 2 to 3 follow-up visits to confirm elimination. Some companies include one follow-up in their initial price; others charge separately.
• Exclusion work ($150 to $400). Sealing entry points is the most effective long-term spider prevention measure but is usually quoted separately from treatment. Exclusion involves caulking gaps, installing door sweeps, and repairing screens.
• Attic or crawl space treatment ($75 to $200 additional). Some companies charge extra for treating attics, crawl spaces, or detached structures like sheds and garages. Confirm what areas are included in the base price.
• Insect treatment for underlying problem ($100 to $250). If the spider problem is driven by a large insect population, treating the insects may require separate products and adds to the total cost. This is common when ants, flies, or crickets are drawing spiders in large numbers.

How Does Spider Treatment Cost Vary by Region?

Spider treatment pricing varies moderately across the country. The primary cost driver is whether venomous species are present in your region, which determines the treatment intensity.

The Midwest states in the brown recluse's primary range (Missouri, Kansas, Oklahoma, Arkansas, Tennessee, Kentucky, and parts of surrounding states) tend to have the highest spider treatment costs because brown recluse infestations require more thorough and repeated treatment. Cities like Cincinnati, Nashville, and St. Louis see particularly high demand for brown recluse services.

How Can You Save Money on Spider Treatment?

What Warranty Should You Expect for Spider Treatment?

Warranty terms for spider treatment vary by company and service type. Here is what to expect.

• One-time treatment: 30 to 90 day warranty is standard. If spiders return within the warranty period, the company will retreat at no cost. Some companies offer no warranty on one-time services, so ask before signing.
• Quarterly or monthly plans: ongoing warranty for the duration of the service agreement. As long as you maintain regular treatments, the company covers any spider activity between visits at no additional charge.
• Brown recluse or black widow treatment: 60 to 90 day warranty with at least one follow-up inspection included. Given the health risk of venomous spiders, reputable companies are more likely to offer extended warranties and aggressive follow-up protocols for these species.

Always get warranty terms in writing before treatment begins. The warranty should specify which spider species are covered, how many free retreatments are included, and the exact duration of coverage. For a broader comparison of all pest control costs, see our pest control cost guide. For help identifying spiders in your home, use our Pest Identifier.

When Is Spider Season and When Should You Treat?

Spider activity follows a predictable seasonal pattern in most of the US, and understanding this pattern helps homeowners time their treatment for maximum effectiveness and minimum cost.

Spring (March through May): Spider activity increases as temperatures rise and prey insects (ants, flies, moths) become active. This is a good time for preventive perimeter treatment to create a barrier before spider populations build. Spring treatment is typically the most cost-effective timing because populations are still small.

Summer (June through August): Peak outdoor spider activity. Web-building spiders are most visible on porches, eaves, fences, and around outdoor lighting. Most professional quarterly plans include a summer application that targets both spiders and their prey insects.

Fall (September through November): The busiest season for indoor spider sightings. Male spiders leave their webs to search for mates, which is why you see large spiders running across floors and walls in autumn. This is the season that generates the most calls to exterminators. Brown recluse and hobo spider activity peaks in fall as males wander into living spaces. A fall perimeter treatment creates a barrier that intercepts spiders before they enter the home.

Winter (December through February): Outdoor spider activity drops significantly in cold climates. However, spiders that entered the home in fall remain active indoors throughout winter, especially in heated basements, garages, and storage areas. Wolf spiders and cellar spiders are the most common winter sightings. In mild climates (Southeast, Southwest, Pacific Coast), spider activity continues year-round with only minor seasonal reduction. For a month-by-month breakdown of when spiders and other pests are most active in your area, see our seasonal pest calendar.

How Do You Spider-Proof Your Home?

Long-term spider reduction comes from a combination of professional treatment and ongoing prevention. These measures reduce spider populations between treatments and can extend the time between professional visits.

• Switch outdoor lighting. Standard white and blue LED lights attract flying insects, which attract spiders that feed on them. Switching to yellow or amber bulbs (sodium vapor or warm-tone LEDs) near doors and windows reduces the insect population around entry points and cuts spider activity near the home by 30 to 50%. This single change is one of the most effective DIY spider reduction strategies.
• Seal entry points. Caulk gaps around windows, doors, utility penetrations, and where siding meets the foundation. Install or replace door sweeps. Screen attic and soffit vents with fine mesh. Spiders follow their prey through the same gaps that let insects in.
• Remove harborage. Clear woodpiles, leaf litter, rock piles, and dense ground cover from within 3 feet of the foundation. These are prime spider habitat. Move firewood storage at least 20 feet from the house and elevate it off the ground.
• Reduce clutter in storage areas. Basements, garages, and closets with stacked boxes, old newspapers, and stored clothing provide ideal hiding spots for brown recluse and other web-building spiders. Store items in sealed plastic bins rather than cardboard boxes. Keep storage areas organized so spaces can be cleaned and inspected.
• Maintain regular cleaning. Vacuum corners, ceiling edges, window frames, and behind furniture monthly. Removing webs regularly discourages spiders from rebuilding in the same spots. This is especially important for brown recluse prevention, as regular disturbance makes areas less attractive for long-term habitation.
• Address the food source. Since spiders follow their prey, reducing the insect population around your home is the most effective long-term spider reduction strategy. A quarterly general pest control plan that targets ants, flies, moths, and other prey insects will reduce spider populations more effectively than spider-specific treatment alone. Most pest control companies price quarterly plans at $100 to $175 per visit, and spider control is included in the general service. For more on whether pest control plans are worth the investment, see our guide on whether pest control is worth it.

Frequently Asked Questions