Spider Control: Reduce Spiders, Webs & Insects

By Alejandro Daniel José
Founder & Editor, Pest Decoded

Last reviewed: July 2026

Effective spider pest control combines web removal, exclusion, clutter reduction, moisture correction, monitoring, and control of the insects spiders use as food. A pesticide application may temporarily reduce visible spiders, but long-term results are unlikely when doors, vents, foundation gaps, exterior lighting, flying insects, storage areas, and undisturbed webs remain unchanged.

Most spiders found around homes are predators of insects and do not require property-wide treatment. Control is more justified when:

• Spiders repeatedly enter occupied rooms
• Numerous active webs appear around doors, windows, porches, or lights
• Egg sacs are found indoors
• A concerning species may be present
• Spiders occur in children’s play areas, stored clothing, shoes, beds, or frequently handled materials
• An underlying insect infestation is supporting spider activity

The main decision factor is whether the problem involves occasional wandering spiders, a continuing indoor population, heavy exterior web-building, or a potentially medically important species. Identification should be based on a specimen and reliable regional evidence rather than a blurry photograph, bite mark, or internet comparison alone.

For signs that suggest continuing activity, see our spider infestation signs guide. For general professional pricing, visit our pest-control cost guide.

How Spider Pest Control Works

Spider control works best as an Integrated Pest Management program. Instead of automatically spraying every visible surface, the process identifies why spiders are present and corrects the conditions supporting them.

A practical program includes:

1. Confirming that the animal is a spider
2. Determining whether it builds webs or actively hunts
3. Mapping sightings, webs, egg sacs, and prey insects
4. Removing active and abandoned webs
5. Vacuuming or capturing indoor spiders
6. Sealing entry points
7. Reducing insects attracted by lights, food, moisture, or plants
8. Reducing clutter and sheltered hiding places
9. Using targeted pesticide treatment only where justified
10. Monitoring for new activity

The U.S. Environmental Protection Agency explains that Integrated Pest Management emphasizes prevention, monitoring, action thresholds, and pesticide use only when needed.

A few outdoor garden spiders may remain below any reasonable action threshold because they help reduce other insects. Repeated indoor sightings, hidden egg sacs, widow-spider habitat, or webs interfering with doors and occupied areas may justify stronger action.

How to Identify a Spider

Spiders are arachnids rather than insects. Adult spiders generally have:

• Eight legs
• Two main body regions
• No wings
• No antennae
• Silk-producing structures called spinnerets

Insects have six legs, three main body regions, and commonly possess antennae. Ticks, mites, harvestmen, pseudoscorpions, and other arachnids may also be mistaken for spiders.

Spider identification can depend on:

• Body shape
• Leg proportions
• Eye arrangement
• Markings
• Web structure
• Hunting behavior
• Habitat
• Geographic range

Color alone is unreliable. Lighting, age, sex, recent feeding, molting, and natural variation can change how a spider appears.

Web-Building Spiders

Web-building spiders usually remain on or near a web that captures prey. Common web types include:

• Orb-shaped webs
• Messy cobwebs
• Funnel webs
• Sheet webs
• Small webs in windows and corners

Web location and structure can help identify the spider family, but an abandoned web does not prove that the spider remains present.

Hunting Spiders

Hunting spiders do not rely on a capture web. They move across floors, walls, vegetation, garages, and storage areas searching for prey.

Examples include:

• Wolf spiders
• Jumping spiders
• Ground spiders
• Sac spiders
• Fishing spiders

A hunting spider found indoors may have entered accidentally through a door, garage, firewood, plant, box, or structural opening.

Harmless vs. Concerning Spider Situations

The University of California Statewide Integrated Pest Management Program notes that spiders are generally beneficial predators and that spiders commonly observed in the open during the day are unlikely to cause serious injury.

That does not mean every spider should be handled. Use gloves and tools when moving stored materials, firewood, outdoor furniture, or clutter in areas where hidden spiders may occur.

Signs of a Spider Infestation

The word “infestation” is often used loosely. Finding one spider does not show that spiders are breeding throughout the property.

Evidence of continuing activity may include:

• New webs appearing shortly after removal
• Several spiders of different sizes
• Egg sacs
• Repeated sticky-trap captures
• Spiders in several rooms
• Numerous prey insects in webs
• Activity around the same cracks or storage areas
• Recurring seasonal entry from outside

Active and Abandoned Webs

An active web may appear maintained and contain recently captured insects. An old web may collect dust and remain after the spider has left.

Remove both active and abandoned webs, record the locations, and inspect the area again. New construction helps identify active zones.

Egg Sacs

Spider egg sacs vary in shape, texture, color, and placement. They may be:

• Attached to webs
• Hidden beneath furniture
• Inside storage areas
• Carried by the female
• Attached to plants or outdoor structures

Remove egg sacs with a vacuum or tool rather than crushing them with bare hands. Empty or dispose of vacuum contents appropriately after collection.

Sticky-Trap Captures

Sticky monitoring traps placed along walls can help identify:

• Rooms with repeated activity
• Travel routes
• Whether spiders are entering from a garage or basement
• Whether prey insects are also present
• Whether activity declines after corrections

Keep traps away from children and pets. Sticky traps are monitoring tools and rarely solve the underlying problem by themselves.

Why Spiders Enter Homes

Spiders may enter while searching for:

• Insect prey
• Shelter
• Mates
• Stable temperature
• Protected molting or egg-laying sites
• Overwintering locations

Common entry routes include:

• Gaps beneath doors
• Damaged screens
• Garage doors
• Foundation cracks
• Utility penetrations
• Crawl-space vents
• Roof and soffit gaps
• Open windows
• Boxes, plants, firewood, and stored items

Exterior lights can attract moths, flies, beetles, and other insects. Spiders then build webs near the concentrated food supply.

Where Spiders Hide Indoors

Basements and Crawl Spaces

These areas may provide humidity, darkness, clutter, insects, and undisturbed corners.

Inspect:

• Foundation walls
• Floor joists
• Utility lines
• Window wells
• Stored boxes
• Sump areas
• Crawl-space vents

Garages

Garages combine exterior access, stored materials, insects, and infrequently disturbed spaces.

Check:

• Door corners
• Weather seals
• Storage shelves
• Firewood
• Gardening equipment
• Gloves and shoes
• Items stored against walls

Attics

Attics may contain flying insects, stored materials, roof gaps, vents, and undisturbed webs. Attic entry can involve fall, electrical, heat, insulation, and respiratory hazards.

Bedrooms and Living Areas

Spiders may hide:

• Behind furniture
• Beneath beds
• Inside closets
• Behind curtains
• Near windows
• Inside shoes or stored clothing

Frequent bedroom sightings may be related to window gaps, prey insects, clutter, or movement from an adjoining garage, attic, basement, or exterior wall.

Step-by-Step Indoor Spider Control

Step 1: Remove Individual Spiders

Small numbers of spiders can be:

• Captured beneath a container and removed
• Vacuumed
• Collected by a pest professional

Do not handle an unidentified spider with bare hands.

Step 2: Remove Webs and Egg Sacs

Use:

• A vacuum
• A long-handled web-removal brush
• A broom
• A disposable cloth

Focus on corners, windows, ceilings, storage areas, basements, garages, and utility rooms. The University of California Statewide Integrated Pest Management Program recommends vacuuming spiders and their webs and reducing clutter that can provide hiding places.

Step 3: Reduce Prey Insects

Check spider webs and sticky traps for the insects being captured.

Possible underlying pests include:

• Flies
• Moths
• Gnats
• Ants
• Cockroaches
• Beetles
• Crickets
• Silverfish

Correct the food, moisture, lighting, drain, sanitation, or structural conditions supporting those insects.

Step 4: Reduce Clutter

• Remove unnecessary cardboard.
• Use sealable storage containers.
• Keep items off the floor when practical.
• Move storage away from walls.
• Shake out gloves, footwear, and outdoor equipment.
• Vacuum beneath furniture and shelving.

Step 5: Seal Entry Points

• Install door sweeps.
• Repair screens.
• Seal utility penetrations.
• Repair foundation cracks.
• Seal gaps around windows and doors.
• Repair garage-door seals.
• Screen vents where appropriate.

The University of California Statewide Integrated Pest Management Program notes that sealing cracks and gaps around windows and doors helps prevent spiders from entering homes.

Step 6: Monitor

Place sticky traps along walls in garages, basements, utility rooms, closets, and other active areas. Number the traps and record captures by date.

Outdoor Spider Control

Complete elimination of outdoor spiders is neither practical nor environmentally desirable. Outdoor control should focus on occupied areas and routes that allow spiders to enter the building.

Remove Webs From Structures

Remove webs around:

• Doors
• Windows
• Porches
• Eaves
• Exterior lights
• Deck railings
• Play equipment
• Outdoor furniture

A strong stream of water may remove webs from suitable exterior surfaces. Avoid damaging electrical fixtures, windows, nests, finishes, and fragile materials.

Reduce Exterior Lighting Attraction

Possible changes include:

• Turning off unnecessary lights
• Using motion sensors
• Relocating lights away from doors
• Directing freestanding lights toward the building
• Closing curtains or blinds near bright windows
• Selecting less insect-attractive lighting where practical

Lighting changes reduce insects rather than directly repelling spiders.

Manage Vegetation and Debris

• Trim vegetation touching the structure.
• Remove leaf litter near entrances.
• Move firewood away from the house.
• Remove piles of bricks and debris.
• Keep grass and weeds managed near the foundation.
• Inspect beneath decks and outdoor furniture.

Correct Moisture

Moisture supports many insects that become spider prey.

Repair:

• Leaking faucets
• Clogged gutters
• Drainage problems
• Condensation
• Irrigation directed at walls
• Damp crawl spaces

Spider-Control Methods Compared

Do Spider Sprays Work?

A spray may kill a spider when the product directly contacts it. Residual products may affect spiders crossing a treated surface when that use is permitted by the label.

Results are often limited because spiders:

• Spend little time on treated open surfaces
• Remain inside webs, cracks, boxes, or voids
• Can enter after treatment
• Are supported by continuing prey insects
• May avoid poorly placed deposits

The University of Minnesota Extension recommends an integrated approach using nonchemical methods and insecticides only when appropriate.

Spider-Repellent Products and Home Remedies

Products and home remedies commonly promoted for spiders include:

• Peppermint oil
• Cedar
• Vinegar
• Chestnuts
• Citrus
• Ultrasonic devices
• Electronic repellents

Odor-based products may produce temporary avoidance under some conditions but do not replace web removal, prey control, exclusion, and monitoring.

Essential oils can irritate people or harm pets when misused. Concentrated oils should not be broadly sprayed around cats, birds, aquariums, children, food surfaces, or enclosed occupied rooms without appropriate product and veterinary guidance.

Spider Pest-Control Safety

Every pesticide must be used according to its EPA-registered label.

Before treatment, tell the provider about:

• Children
• Pregnant occupants
• Pets
• Aquariums and terrariums
• People with asthma or chemical sensitivities
• Food-preparation areas
• Gardens and flowering plants
• Ponds and drainage areas

Ask for:

• Product names
• EPA registration numbers
• Application locations
• Preparation instructions
• Re-entry instructions
• Pet precautions
• Cleaning instructions

Do not:

• Use outdoor products indoors
• Apply more than the label permits
• Treat bedding or clothing unless specifically allowed
• Spray inside electrical equipment
• Apply dust in visible piles
• Place sticky traps where children or pets can contact them
• Handle unidentified spiders with bare hands

Suspected Venomous Spiders

Widow and recluse spiders are frequently misidentified. Geographic range is an important part of identification.

A concerning spider should be:

• Captured without direct handling when it can be done safely
• Placed in a sealed container
• Photographed from several angles
• Identified by an extension service, qualified entomologist, medical professional, or experienced pest provider

Do not rely on markings alone. Many harmless spiders have dark bodies, brown coloring, abdominal patterns, or shapes that resemble commonly feared species.

Spider Bites and Medical Caution

A skin lesion, swelling, pain, redness, itching, or two small marks cannot prove that a spider caused the reaction.

Many suspected spider bites are never linked to a captured spider. Other possible causes include:

• Other arthropods
• Skin infections
• Allergic reactions
• Contact dermatitis
• Minor injuries
• Other medical conditions

Seek prompt medical care for severe pain, muscle cramping, breathing difficulty, weakness, spreading redness, fever, tissue damage, signs of infection, or another concerning reaction.

Do not attempt to identify a spider species from a photograph of skin.

Why Spider Control Fails

• Only visible spiders were sprayed.
• Webs and egg sacs remained.
• Flying insects continued gathering around lights.
• Door and window gaps remained open.
• Clutter provided protected harborages.
• Moisture supported prey insects.
• Exterior vegetation touched the building.
• Firewood or boxes carried spiders indoors.
• The pesticide did not reach the active harborage.
• Monitoring stopped before seasonal entry ended.
• The animal was not actually a spider.

Repeated treatment failure should trigger another inspection of prey insects, entry routes, moisture, storage, and species identification.

How Long Does Spider Control Take?

One accidental spider can be removed immediately. A property with heavy exterior webs or continuing indoor activity may require several weeks of corrections and monitoring.

When to Call a Spider Exterminator

Professional spider control may be appropriate when:

• A concerning species may be present
• Spiders occur in occupied bedrooms or children’s areas
• Numerous egg sacs are present
• Webs return repeatedly after removal
• Spiders occupy inaccessible attics, crawl spaces, or voids
• An underlying insect infestation requires treatment
• The property is a warehouse, school, daycare, healthcare site, or commercial facility
• DIY pesticide use would create safety concerns
• Identification remains uncertain

What Professional Service Should Include

• Spider and prey-insect identification
• Interior and exterior inspection
• Web and egg-sac assessment
• Entry-point findings
• Lighting and moisture recommendations
• Clutter and storage recommendations
• Targeted treatment plan
• Follow-up and monitoring

Questions to Ask the Company

• Which spider or spider group did you identify?
• What evidence suggests an infestation?
• Which prey insects are present?
• Where are spiders entering?
• Will webs and egg sacs be removed?
• Which nonchemical corrections are recommended?
• What products and EPA registration numbers will be used?
• Which locations will be treated?
• How will success be measured?
• Are follow-up visits included?
• What can cause spiders to return?

Spider Activity Log

Frequently Asked Questions

What is the best way to control spiders?

Remove spiders, webs, and egg sacs; reduce prey insects; seal entry points; reduce clutter and moisture; change attractive exterior lighting; and use targeted pesticide treatment only when justified.

Does one spider mean an infestation?

No. One spider may have entered accidentally. Repeated sightings, egg sacs, several life stages, and webs returning after removal provide stronger evidence of continuing activity.

Why do spiders keep coming into my house?

Common reasons include prey insects, door gaps, damaged screens, exterior lighting, moisture, clutter, firewood, boxes, and seasonal movement.

Do spiders indicate another pest problem?

Sometimes. Numerous spiders or webs containing insects may indicate flies, moths, gnats, ants, cockroaches, beetles, or other prey around the property.

Should outdoor spiders be killed?

Not automatically. Most outdoor spiders are beneficial predators. Focus control on occupied areas, concerning species, heavy webbing, and entry routes.

Does removing webs get rid of spiders?

Web removal reduces active and abandoned sites and may remove egg sacs. Spiders can return when prey insects, shelter, and entry routes remain.

Do spider sprays work?

Some products kill spiders by direct contact or after they cross treated surfaces. Results are usually temporary unless exclusion, web removal, prey control, and cleaning are also completed.

Do peppermint oil and other scents repel spiders?

Odor products may cause temporary avoidance but do not provide reliable structural control. Concentrated essential oils may also create pet and occupant risks.

Do ultrasonic spider repellents work?

Ultrasonic devices should not replace inspection, exclusion, web removal, prey reduction, and monitoring.

Do sticky traps work for spiders?

Sticky traps can capture wandering spiders and help locate activity. They rarely solve the cause of the problem by themselves.

Why are spiders around my porch lights?

Lights attract flying insects, providing concentrated prey. Reduce unnecessary lighting, relocate fixtures, and remove webs regularly.

How do I keep spiders out of my garage?

Repair garage-door seals, reduce cardboard and clutter, store items off the floor, remove webs, control insects, and inspect firewood and equipment.

Can spiders live inside walls?

Some spiders use wall voids, utility openings, cracks, and spaces around windows. They may leave those areas to hunt or build webs.

Can spiders come through drains?

A spider may become trapped in a sink or bathtub after entering from elsewhere, but damaged plumbing gaps, utility openings, and dry drains can also provide routes for arthropods.

How can I identify a venomous spider?

Use a captured specimen, geographic range, body features, and qualified identification. Do not rely on color, one marking, or a skin reaction alone.

Can a doctor identify a spider from a bite?

A skin reaction alone usually cannot identify the responsible species. Medical treatment should be based on the symptoms and clinical evaluation.

When should I call a spider exterminator?

Call a professional for suspected concerning species, numerous egg sacs, recurring indoor activity, inaccessible harborages, prey infestations, commercial properties, or failed DIY control.

How much does professional spider control cost?

Pricing depends on property size, indoor and outdoor treatment, web removal, infestation level, prey insects, accessibility, service frequency, and location. See our pest-control cost guide.

Spider identification should be based on a specimen and reliable regional information. A skin lesion cannot confirm a spider bite or identify a species. Seek medical care for severe or worsening symptoms, and use pesticides only according to their EPA-registered labels.