A spider exterminator reduces spiders in and around a home by finding where they hide, removing webs and egg sacs, treating the corners, cracks and outdoor harborage they use, sealing entry points and cutting down the insects they feed on. Most house spiders are harmless and even helpful, so the main reasons to call one are frequent sightings, webs that keep coming back, egg sacs, or medically important spiders such as black widows or brown recluses. Saela’s spider control service follows that pattern of inspection, targeted treatment, exclusion and follow-up.
Saela Pest Control is a residential and commercial pest control company based in Orem, Utah, that provides the best spider control for homes and businesses, with protocols developed by Board Certified Entomologist Dennis Weiss. This guide covers how to identify common and dangerous spiders, the signs that a spider problem is growing, what you can do yourself, how professional treatment works and how to choose a provider.
Understanding Spiders: Know Your Eight-Legged Visitors
Spiders are arachnids, not insects: they have eight legs and two main body regions, and they feed on other small animals, mostly insects. UC IPM’s spider guide describes spiders as mostly beneficial because they eat pest insects, and notes that the jaws of most spiders are too small to bite humans.
Most spiders found in homes are not dangerous, but a few species can cause medically serious bites. Colorado State University Extension’s guide to spiders in the home notes that most spiders are not aggressive and bite only when trapped against the skin. Being able to recognize the few dangerous species tells you how urgently to act.
Common Household Spider Species
The spiders most often found indoors are cobweb (house) spiders, cellar spiders, wolf spiders and jumping spiders. CSU Extension describes cobweb spiders as common in dark corners around the home and cellar spiders as usually found in dark corners of cellars, crawl spaces and garages. Wolf spiders are active hunters that don’t build a capture web, and jumping spiders stalk and pounce on their prey. All four are generally harmless nuisances rather than health risks.
Potentially Dangerous Spider Species
Two groups of spiders in the United States can cause medically serious bites, and finding them indoors calls for prompt action:
Black Widow Spiders
A black widow has a shiny black body with a red hourglass shape on the underside of its abdomen. MedlinePlus’s black widow guide says these spiders live throughout the United States, especially in southern and western areas, around barns, sheds, stone walls, fences, woodpiles and porch furniture, and CSU Extension notes that the western widow is common in Colorado. The venom affects the nerves, and a bite can cause spreading muscle pain and cramping that needs medical care.
Brown Recluse Spiders
A brown recluse is small and brown, with a dark violin-shaped mark on its head and upper body and three pairs of eyes instead of four. MedlinePlus’s brown recluse guide says it is most common in the south and central states, especially Missouri, Kansas, Arkansas, Louisiana, eastern Texas and Oklahoma. Its venom damages tissue, and a bite can develop into a large open sore over the following hours or days.
Signs of Spider Infestation: When to Call Spider Exterminators
The clearest signs of a growing spider problem are frequent sightings, webs that return soon after you clear them and egg sacs in protected spots. Any one of these on its own is common; several together mean spiders are living and breeding in the home rather than wandering in.
Visible Spider Activity
Seeing a spider now and then is normal, but seeing several in a short time, or in the same rooms again and again, suggests an established population. Pay attention to where you see them, because that points to their hiding places.
Season matters too. CSU Extension notes that some spiders wander indoors in early fall when cooler temperatures force them to look for shelter, so a fall rise in sightings is expected; steady sightings in every season suggest spiders that are living indoors year-round.
Web Accumulation
Webs that come back quickly after you remove them show that spiders are actively living in that spot. Web style can also hint at the spider: cobweb spiders, including widows, build irregular, tangled webs in corners, and cellar spiders leave loose, messy webs in ceiling corners. Wolf spiders and jumping spiders hunt without a capture web, so fewer webs does not always mean fewer spiders.
Egg Sacs Discovery
Egg sacs are a sign that the spiders you see are reproducing indoors. They are small, silk-wrapped bundles, often round or teardrop-shaped, tucked into web corners, behind furniture or under ledges.
Remove egg sacs when you find them, ideally with a vacuum, and dispose of the bag outside. Our article on the spider life cycle explains how egg sacs turn into new spiders.
DIY Spider Control: Preliminary Measures Before Professional Help
Simple cleaning, sealing and lighting changes often reduce spiders noticeably before you need professional help. These steps also make any professional treatment work better.
Home Environment Modifications
Making your home less hospitable means taking away hiding places and the insects spiders eat. Start with these changes:
Reduce clutter in storage areas, basements and garages, and store items in sealed plastic containers instead of cardboard boxes where you can.
Cut down on the insects that attract spiders: CSU Extension notes that reducing outdoor lighting, or switching to yellow or sodium vapor lights that are less attractive to insects, can limit spider web building. Seal gaps around doors and windows, and Montana State University Extension also recommends repairing screens and installing door sweeps.
Vacuum regularly, including corners, baseboards and the undersides of furniture, to remove spiders, webs and egg sacs. CSU Extension recommends regularly vacuuming or brushing away spider webs.
Monitoring and Removal Tools
A few inexpensive tools help you see where spiders are active and remove them without spraying:
Sticky traps placed along baseboards and other travel routes can capture spiders, as CSU Extension notes, and show you where they are coming from.
A vacuum with a hose attachment is the simplest way to remove spiders, webs and egg sacs from corners and ceilings.
Home sprays, dusts and scented “repellent” products are popular, but the extension guides cited here recommend sealing, cleanup and vacuuming instead, and any pesticide product should be used only as its label directs.
Limitations of DIY Methods
DIY steps help with small problems, but they have limits:
- Store-bought sprays often kill only the spiders they hit and leave hidden ones untouched
- Black widows and brown recluses call for more caution than DIY methods allow
- DIY efforts rarely address the insects that draw spiders in
- Spiders hiding in wall voids, crawl spaces and attics are hard to reach
If spiders keep returning after you have cleaned, sealed and vacuumed, a professional inspection can find the sources you are missing.
Professional Spider Extermination: The Expert Approach
A professional spider treatment follows a clear sequence: inspect, identify, treat the harborage, seal entry points and follow up. Saela uses an integrated pest management cycle of pest identification, activity monitoring, targeted treatment and evaluation, with adjustments based on the results.
Comprehensive Inspection Process
A professional inspection identifies the spiders, finds where they hide and looks for the conditions that support them:
A trained technician can tell common house spiders from medically important species such as black widows and brown recluses, which shapes how urgently and where to treat.
The inspection covers inside and outside, focusing on basements, attics, crawl spaces, storage areas, the foundation and landscaping, and it looks for the insects and conditions that attract spiders. Every Saela plan includes a 50+ point property inspection covering entry points, nesting sites and outdoor structures.
The findings shape a plan that fits the property, the spider species and the household, including children and pets.
Treatment Methods and Technologies
Professional treatment combines several methods rather than relying on one spray:
Targeted Insecticide Application
Treatments are applied where spiders hide and travel, such as corners, cracks, voids and the outside perimeter. CSU Extension notes that residual insecticides can control spiders when applied to corners, while total release foggers probably have little effect on spiders. Products should be registered and applied according to their labels.
Exclusion Techniques
Exclusion keeps spiders from coming back in. CSU Extension recommends caulking cracks and crevices around the foundation, and Saela’s IPM approach includes sealing entry points and reducing the food, water and shelter that support pests. Gaps around utility lines, doors and windows are common entry points to address.
Integrated Pest Management (IPM) Approach
Integrated pest management combines several strategies so that treatment is only one part of the plan:
- Habitat changes that make the property less attractive to spiders
- Removal of existing webs and egg sacs
- Targeted treatment of active spider areas
- Control of the insects spiders feed on
- Follow-up monitoring to check the results
Post-Treatment Protocols and Prevention
Good spider service continues after the first visit:
After treatment, your technician should explain which storage, landscaping, lighting and cleaning changes will keep spiders from returning.
Follow-up visits check whether activity has dropped and adjust the plan if it hasn’t. Saela offers no-charge return visits for covered pests between scheduled services.
Ongoing plans keep prevention steady through the year. Saela’s Protection Program includes interior and exterior treatments with every-other-month or quarterly visits, depending on the selected plan.
Choosing the Right Spider Exterminator Service
Choose a spider exterminator by comparing licensing, training, inspection quality, safety practices and follow-up terms. The EPA’s tips for selecting a pest control service recommend getting several estimates and not choosing on cost alone.
Qualifications and Expertise
Look for a company with trained, licensed technicians and real entomology expertise behind its methods. A qualified provider should:
- Use certified or licensed applicators, as required in your state
- Train technicians in spider identification and control
- Belong to professional organizations such as the National Pest Management Association
- Know which spiders are common in your area
- Share reviews or references from customers
Saela is an NPMA member with Associate Certified Entomologists on staff, and its protocols are developed by Dennis Weiss, Saela’s board-certified entomologist, who holds the Entomological Society of America’s Board Certified Entomologist credential.
Treatment Safety Considerations
Safe treatment starts with knowing exactly what will be applied and where. Ask about these points before the first visit:
Ask which products will be used, where and how they will be applied. EPA suggests requesting copies of the labels for all products and the rates at which they will be applied.
Ask how the company records each treatment and whether the technician applying products is a certified, licensed applicator.
Ask what you need to do before and after treatment, including when people and pets can return to treated areas; those instructions should come from the product label and your licensed provider.
Service Guarantees and Follow-up
A good spider control service puts its follow-up terms in writing. Look for:
- Written terms for what happens if spiders return
- Clear pricing and contract terms
- Scheduled follow-up visits
- Records of the services performed
- Easy ways to reach the company with questions
Saela quotes service based on pest type, location, property size, visit frequency and treatment products, and you can see how Saela prices its plans.
Preventing Future Spider Infestations
Keeping spiders away after treatment depends on fewer hiding places, fewer insects and fewer ways in. These habits make the biggest difference.
Interior Prevention Strategies
Inside, focus on clutter, cleaning and the insects spiders eat:
Vacuum corners, closets and under furniture regularly, paying special attention to basements, storage areas and other rooms you rarely use.
Store items in sealed plastic containers instead of cardboard boxes, especially in basements, attics and garages, and keep stored items off the floor where you can.
Reduce indoor insects by cleaning up food spills, storing food in sealed containers and dealing with other pest problems, because fewer insects means less food for spiders.
Exterior Maintenance for Spider Control
Outside, the goal is to remove shelter next to the house and reduce the insects drawn to it. CSU Extension recommends removing rocks, woodpiles, compost piles, old boards and other sheltering sites next to the home and caulking cracks around the foundation. Trim vegetation away from the walls and roof, keep woodpiles and debris away from the house as Montana State also advises, and use yellow or sodium vapor bulbs outdoors. Knock down webs around windows, eaves and doorways regularly so spiders don’t settle there.
Seasonal Considerations
Spider prevention follows the seasons:
Spring Preparation
As the weather warms and insects become active, spring is a good time for:
- A thorough cleaning of storage areas, basements and garages
- Sealing gaps you noticed over the winter
- Scheduling a perimeter inspection and treatment
- Clearing debris that built up over the winter
Fall Prevention
Montana State Extension notes that many spiders seek a protected place to spend the winter, so fall is the time for:
- Inspecting and sealing exterior cracks and gaps
- Installing door sweeps and weatherstripping
- Treating the perimeter where spiders gather
- Cleaning storage areas before they become winter shelter
A seasonal plan built with a professional keeps these steps on schedule; our guide to the role of professional spider control explains how ongoing service fits in.
Common Myths About Spiders and Spider Control
A few common myths lead people to fear the wrong spiders or rely on treatments that don’t work. Here is what the evidence shows.
Myth: All Spiders Are Dangerous
Most spiders are harmless to people. In the United States, the spiders of real medical concern are mainly the widow spiders and the brown recluse, and our article on the most dangerous spiders in the United States covers them in detail.
Most household spiders are beneficial, eating insects in and around the home. A professional can tell harmless species from those that need prompt control.
Myth: Spiders Come Inside Because a Home Is Dirty
Spiders follow food, shelter and the weather, not dirt: they come where insects are plentiful and where they can hide, and some move indoors in early fall to find shelter. A spider problem often points to an insect problem.
Clutter still matters, because it gives spiders more places to hide. Professional control addresses both the spiders and the conditions that attract their prey.
Myth: Store-Bought Spider Sprays Work Just Like Professional Treatments
Consumer sprays may kill spiders on contact, but they rarely reach hidden spiders or address the insects that attract them. CSU Extension also notes that total release foggers probably have little effect on spiders.
Professional treatment targets the specific corners, cracks and outdoor harborage spiders use, and pairs treatment with sealing and insect control.
When to Seek Urgent Spider Control
Most spider problems can wait for a scheduled visit, but some situations call for faster action:
Dangerous Spider Identification
If you find black widows or brown recluses in living areas, act sooner, especially in homes with:
- Young children who might touch or disturb spiders
- Older adults or people with weakened immune systems
- People who have reacted badly to bites or stings before
- Pets that might investigate spiders
In these cases, schedule an inspection promptly, keep people away from the area and shake out shoes, clothing and bedding before use. If someone is bitten, follow our guide on what to do if you’re bitten by a spider.
Sudden Large Infestations
Sometimes many spiders appear at once, for example when:
- An egg sac hatches and releases many young spiders
- Renovation disturbs an area where spiders were sheltering
- Cooler fall weather drives spiders indoors
A sudden jump like this deserves an inspection to find where the spiders are coming from.
Spider Problems After Storms or Weather Changes
Changes in weather can push spiders and their prey indoors:
- Cooler fall temperatures send some spiders looking for shelter
- Wet weather can drive insects, and the spiders that follow them, toward the house
- Clearing storm debris can disturb outdoor shelters
After these events, sealing gaps and clearing debris near the house helps keep spiders from settling indoors.
Spider Extermination for Special Environments
Different properties need different spider plans. Here is how needs change by setting:
Commercial Building Considerations
Commercial spider control has to work around operations and produce records. A commercial plan should:
- Fit around business hours and customer areas
- Address large structural areas such as warehouses and loading docks
- Meet the requirements of the business type, such as food service
- Provide service records for audits
Saela offers commercial pest-control programs for food service, hospitality, multifamily housing, offices, retail, schools and government facilities, and it uses PestWatch for activity maps, service logs and reporting.
Agricultural and Outbuilding Spider Management
Barns, sheds and outbuildings collect spiders because they offer shelter and insects:
- Spiders around fields and gardens help control pest insects
- Barns and storage buildings may need targeted treatment where people work
- Black widows in outbuildings are a reason for gloves and caution
- Integrated approaches protect beneficial spiders while managing problem areas
Wear gloves when moving stored items, boards or firewood, where widows often hide.
Vacation Home and Seasonal Property Protection
Homes that sit empty for weeks or months give spiders time to settle in:
- Undisturbed rooms let spiders build webs and lay eggs
- No one is there to notice early signs
- Opening the property can reveal webs and egg sacs throughout
- Remote locations may limit how often service is possible
A scheduled service plan with regular inspections helps keep seasonal homes in check while you are away.
Special Environment Considerations
In short, commercial buildings need spider control that works around operations and produces records, outbuildings need targeted treatment that protects beneficial spiders, and seasonal homes need regular inspections while they sit empty. In every setting, the same basics apply: identify the spiders, remove shelter and insects, seal entry points and follow up.
Why Hire Saela Pest Control for Spider Extermination?
Saela combines a detailed inspection, an IPM approach and follow-up visits in one plan. Saela began as Edge Pest Control in 2008 and has performed more than 4 million services since then, a measure of service volume rather than results.
Specialized Expertise in Spider Management
Saela’s protocols are developed by Dennis Weiss, its board-certified entomologist, who also trains technicians and audits service quality. That training covers identifying spiders, including the medically important species, and finding where they hide.
Treatment targets the specific harborage and conditions behind each infestation rather than a general spray. Saela’s IPM approach includes sealing entry points and reducing the food, water and shelter that support pests.
Treatment Approach
Saela selects treatments for the spiders, the property and the household, and applies registered products according to their labels. Saela is listed in QualityPro’s directory of accredited pest management companies, and its listed entries show GreenPro service certification.
Each plan combines immediate treatment with prevention, so the conditions that attract spiders are addressed along with the spiders themselves. Follow-up visits check the results and adjust the plan when needed.
Customer-Focused Service Experience
Saela explains its treatment approach, pricing and agreement terms before service begins. Its Lakewood, Washington location is rated 4.8 out of 5 from 1,164 reviews on Google as of October 2026, and in a February 2024 Google review, Lucas O praised a technician’s “meticulous attention to detail and his respectful treatment of property.”
Saela offers no-charge return visits for covered pests between scheduled services.
If spiders keep turning up in your home, book a call with Saela to schedule a spider inspection.
Who wrote this article?
Devin Hutchings (Marketing Director at Saela Pest Control) wrote this article.
Devin leads Saela’s marketing and growth strategy. He brings more than 15 years of marketing experience across Uber, C.R. England, Lugg, and Neighbor. His background spans customer acquisition, retention, and developing marketing channels for service businesses and consumer marketplaces.
