Seattle Termite Exterminators
Termites are among the most destructive pests in Seattle homes. Unlike ants or spiders, termites work silently inside wood, foundations, and crawl spaces, causing thousands of dollars in structural damage before most homeowners even notice. That’s why professional termite inspections and treatments are critical for long-term protection. Why Termites Are a Major Threat in Seattle Seattle’s damp conditions and older housing stock make the city particularly vulnerable. (Related: Carpenter Ant Exterminators in Seattle ants often get mistaken for termites, but both cause structural damage.) Signs of a Termite Infestation (See also: Seattle Home Pest Inspections for early detection before damage occurs.) Professional Termite Treatments in Seattle Our termite exterminators use proven, safe methods to eliminate infestations and protect your property: (Related: Rat Abatement Services in Seattle rodents often exploit the same crawl spaces where termites thrive.) Why Choose AMPM Exterminators Protect Your Home From Termite Damage A small termite problem can quickly escalate into thousands of dollars in structural repairs. Don’t wait until you see visible damage schedule a professional termite inspection today. (Explore: Seattle Termite Inspections for Real Estate & Homeowners.)
Seattle Hobo Spider Exterminators
House spiders are among the most common pests Seattle homeowners’ encounter. While they’re not usually dangerous, they build messy webs, multiply quickly, and often signal larger pest problems inside the home. If left unchecked, house spider populations spread from attics and basements to bedrooms, kitchens, and living areas making professional spider control essential. Why Seattle Homes Attract House Spiders (Related: Seattle Hobo Spider Exterminators and Seattle Garage Spider Control) Signs of a House Spider Infestation (See also: Seattle Attic & Basement Spider Exterminators and Seattle Commercial Spider Exterminators) Why DIY Spider Sprays Fail Over-the-counter sprays kill visible spiders but do nothing for hidden egg sacs or breeding populations. Without professional intervention, new webs appear within days frustrating homeowners and wasting time and money. Professional House Spider Extermination Our Seattle spider control services are designed for lasting results: (You may also need Seattle Rat Abatement or Sugar Ant Extermination if insects or rodents are contributing to infestations.) Keep Spiders From Taking Over Your Home House spiders may seem harmless, but when webs appear in multiple rooms, you’re dealing with an infestation. Early treatment protects your family and prevents larger infestations from developing. (Explore: Seattle Home Spider Extermination for complete spider protection.)
Commercial Spider Extermination Seattle | Licensed Business Pest Control | AMPM Exterminators
Spider Extermination for Seattle Businesses AMPM Exterminators Spider infestations in commercial buildings are a compliance risk, a reputational liability, and often a signal of a broader pest problem. AMPM Exterminators provides licensed commercial spider extermination across Seattle and King County, serving restaurants, office buildings, warehouses, retail stores, medical facilities, and multiunit properties. We offer discreet service, flexible scheduling around business hours, and documented treatment reports for property managers and compliance records. Call (206) 571 7580 Available 7 Days a Week What Makes Commercial Spider Infestations Different from Residential Spiders in a home are a nuisance. Spiders in a business carry a different set of consequences: Customer facing impact. A web in a restaurant dining room, hotel lobby, or retail fitting room creates an immediate negative impression. In an era of Google reviews and smartphone cameras, one visible spider can become a public reputation problem within hours. Health code and compliance exposure. Food service businesses in Seattle operate under King County Public Health inspections. Visible pest activity including spider webs in food storage or prep areas can result in documented violations. Having a licensed pest control provider with service records on file demonstrates proactive compliance. Indicator of a secondary infestation. Spiders don’t establish themselves without a food source. A recurring spider presence in a commercial building almost always points to an underlying population of flies, gnats, ants, or stored-product beetles. AMPM’s commercial inspections identify and address both the spiders and the insects feeding them. Structural access points at scale. Commercial buildings have loading docks, mechanical rooms, roof access panels, and utility chases that residential homes don’t. These create far more entry opportunities, which is why spider populations in commercial spaces tend to be larger and harder to self treat. Industries We Serve in Seattle AMPM Exterminators works regularly with the following business types across King County: Restaurants & Food Service Kitchen environments attract flies and gnats, which in turn draw spiders to rafters, storage rooms, and back of house areas. We schedule service before or after operating hours and provide documentation for health department records. Warehouses & Distribution Centers High shelving, cardboard inventory, and low-traffic corners create ideal harborage. Seasonal spider surges are common in late summer and fall as temperatures drop in the Pacific Northwest. Office Buildings & Co-Working Spaces Spiders typically concentrate near exterior walls, stairwells, and HVAC access points. Visible infestations in common areas and restrooms generate employee complaints and facility management headaches. Retail Stores Window displays, fitting rooms, and stockrooms all attract spiders, especially in older Pioneer Square or Capitol Hill building stock with brick construction and aging window seals. Hotels & Property Management Guest facing spider sightings generate bad reviews. We offer recurring service plans that keep common areas and individual units treated on a schedule. Medical & Dental Offices Sterile environment expectations make any pest sighting unacceptable. We use low impact, targeted treatments appropriate for sensitive settings. Multi-Unit Residential (5+ Units) Property managers dealing with spider complaints across multiple units benefit from a building wide treatment and prevention program rather than unit by unit reactive calls. AMPM’s Commercial Spider Control Process Step 1 Commercial Inspection A licensed technician surveys the full property: exterior perimeter, loading areas, mechanical rooms, storage, and any customer-facing spaces. We identify the spider species present (house spider, hobo spider, cellar spider, etc.), locate harborage sites, and document entry points. Step 2 Targeted Treatment We apply residual treatments to baseboards, wall voids, rafters, and exterior perimeter. Web removal is included in every visit. For food service and medical clients, we use formulations appropriate for sensitive environments and provide Safety Data Sheets on request. Step 3 Exclusion Recommendations Beyond chemical treatment, we identify structural gaps, lighting issues, and sanitation factors that are sustaining the infestation. Our written report gives your facilities team a clear action list. Step 4 Integrated Pest Management (IPM) Follow Through If the inspection reveals a secondary infestation driving spider activity flies, ants, stored-product pests we address that in the same service or schedule a coordinated follow-up. Treating spiders without eliminating their food source produces short-term results only. Step 5 Ongoing Commercial Service Plans One time treatments clear an active infestation. Monthly or quarterly maintenance plans prevent recurrence and give you documentation for compliance purposes. We provide written service reports after every visit. Spider Species Common in Seattle Commercial Buildings Hobo Spider Funnel shaped webs at ground level near exterior walls and in mechanical rooms. Historically associated with bites; more common in industrial and warehouse settings. Giant House Spider Large, fast moving, and alarming to customers and employees. Frequently found in basements, garages, and building perimeters. Not dangerous but nearly impossible to ignore. Cellar Spider (Daddy Long Legs) Accumulate in high numbers in corners, ceilings, and storage areas. Their webs tangle quickly and become visually significant in customer-facing spaces. Black Widow Present in King County, particularly in exterior storage, utility areas, and loading docks. Medically significant. If identified during inspection, removal is handled with full protective protocol. Frequently Asked Questions Commercial Spider Control How quickly can AMPM respond to a commercial spider infestation in Seattle? We offer same-day and next-day service for commercial clients throughout King County. Call (206) 571 7580 to confirm availability. Do you work around our business hours? Yes. We schedule commercial treatments before opening, after closing, or during low traffic periods to minimize disruption to your operations. Will you provide documentation for a health inspection or property manager? Absolutely. Every commercial service includes a written report with treatment details, products used, and recommendations. We can provide these in PDF format for your compliance files. How is commercial spider control priced? Pricing is based on square footage, building type, severity, and frequency of service. We provide free on site estimates for commercial accounts. One time treatments for small commercial spaces typically start around $200–$400; ongoing service plans are priced by visit frequency and property size. Do you treat the exterior of the building too? Yes. Perimeter treatment is a core part of commercial spider control, especially
Seattle Whole House Spider Exterminators
Seattle homes face spider infestations year-round from attics and basements to garages and living spaces. While one or two spiders may not seem like a big deal, a full-house infestation can quickly grow out of control. Professional spider extermination is the only way to remove the source and keep them from coming back. Where Spiders Hide in Seattle Homes (Related: Seattle Garage Spider Exterminators and Attic & Basement Spider Extermination) Signs of a Whole-House Spider Infestation (See also: Seattle Hobo Spider Control and House Spider Exterminators) Complete Spider Extermination Services Our Seattle exterminators take a whole-house approach: (You may also need Seattle Ant Control or Rat Abatement Services if spiders are feeding on other pest infestations inside your home.) Protect Your Entire Home From Spiders Don’t wait until spiders spread from garages or basements into bedrooms and living areas. Professional whole-house spider extermination ensures every room is treated and protected. (Explore: Seattle Residential Pest Control Services for complete pest protection beyond spiders.)
Seattle Garage Spider Exterminators
Hobo Spiders in Garages: What It Means and How to Get Rid of Them If you are seeing spiders in your garage in Seattle, there is a high chance they are ground-dwelling species like hobo spiders. Garages are one of the most common entry points for spiders because they sit at ground level, connect directly to the outside, and often contain clutter, moisture, and insects. If left untreated, garage spider activity can spread into your home. Why Are There Spiders in My Garage? Spiders are drawn to garages because they provide food, shelter, and easy access. The most common reasons include: Garages act as a transition zone between outdoors and indoors, making them a primary nesting area. Why Hobo Spiders Are Common in Seattle Garages Hobo spiders are one of the most common ground-level spiders in Seattle and King County. They prefer garages because: Unlike other spiders, they rarely climb walls or ceilings. How to Identify a Hobo Spider Hobo spiders are often confused with other brown spiders, but there are key differences. You may have a hobo spider if you notice: Correct identification matters because treatment methods differ from other spider species. Are Hobo Spiders Dangerous? Most hobo spiders are not aggressive, but they can bite if trapped or pressed against skin. In most cases, bites are mild and similar to other insect bites. However, any bite that becomes painful, swollen, or shows signs of infection should be evaluated. The bigger concern is not danger but the fact that their presence usually indicates a larger hidden problem. Signs of a Garage Spider Infestation You may have an active spider issue if you notice: Multiple sightings usually mean spiders are nesting nearby. What Attracts Spiders to Garages in Seattle? Spider activity is usually caused by three conditions: 1. Insects (food source)Crickets, beetles, and other insects attract hunting spiders. 2. Entry pointsGarage doors, cracks, and gaps allow spiders inside. 3. Clutter and hiding spacesBoxes, tools, and storage create ideal shelter. Seattle’s damp environment increases all three factors. How to Get Rid of Spiders in Your Garage The most effective way to eliminate garage spiders is to remove both the spiders and what attracts them. Key steps include: Without addressing the source, spiders will continue to return. Why DIY Spider Sprays Often Fail Most store bought sprays only kill spiders you can see. They do not reach: Some sprays can even scatter spiders deeper into hiding. This is why infestations often come back after temporary relief. When to Call a Garage Spider Exterminator You should call a professional if: Ongoing activity usually means spiders are established in the structure. Professional Garage Spider Control in Seattle Professional treatment focuses on eliminating the problem at its source. A complete service typically includes: This approach provides long term results instead of short term fixes. Why Garage Spider Problems Are Common in Seattle and King County Seattle homes are especially prone to garage spider issues because of: Garages are often the first place infestations begin. Frequently Asked Questions Do spiders in the garage mean I have more in my house? Not always, but garages are often the starting point.Spiders can move inside if the population grows. Can hobo spiders climb walls? No.Hobo spiders prefer staying on the ground and do not climb smooth surfaces well. What attracts spiders the most in garages? Insects, clutter, and entry points are the main causes. How do I keep spiders out of my garage? Seal gaps, reduce clutter, and control insects to make the space less attractive. Are garage spiders dangerous? Most are not dangerous, but frequent sightings indicate a larger pest issue. Get Rid of Garage Spiders in Seattle If you’re seeing spiders in your garage, the problem is likely deeper than what’s visible. At AMPM Exterminators, we specialize in identifying spider species and eliminating infestations at the source. Our treatments focus on long-term prevention, not just temporary removal. Contact us today to schedule a garage spider inspection and keep your home protected year round.
Attic & Basement Spider Exterminator Seattle | AMPM Exterminators
Attic & Basement Spider Control in Seattle Source Level Elimination If you’re seeing spiders inside your Seattle home, the real infestation is almost always hidden above or below you. Attics and basements in the Pacific Northwest are the first places spiders establish warm, undisturbed, and full of insects to eat. Spraying visible spiders temporarily reduces numbers, but without treating the source, they return within weeks. AMPM Exterminators specializes in attic and basement spider extermination across Seattle and King County. Our process targets webs, egg sacs, insect prey, moisture conditions, and the entry points that let spiders get in so results last. Why Seattle Attics and Basements Are Especially Prone to Spider Infestations Seattle’s climate is one of the most spider-favorable in the United States. Average annual humidity above 75%, mild winters that keep spiders active year-round, and dense vegetation surrounding most homes create a constant supply of both spiders and the insects they feed on. Specific structural conditions that make Seattle homes uniquely vulnerable: Pier and beam and crawl space foundations common in homes built before 1980 create unventilated, damp voids directly beneath living spaces Uninsulated attics with open soffit vents give spiders and their prey unrestricted access Cedar shake or wood siding common throughout Capitol Hill, Ballard, and West Seattle develops gaps as it ages Moss on rooflines traps moisture and attracts the small insects that form a spider’s primary food source Dense tree canopy in neighborhoods like Magnolia, Ravenna, and Maple Leaf keeps exterior humidity high even in dry months These factors combine to make attics and basements the starting point for nearly every significant spider infestation AMPM treats in King County. Which Spiders Live in Seattle Attics and Basements Knowing which species you’re dealing with matters for treatment. Different spiders have different habits, harborage preferences, and responses to treatment products. Giant House Spider (Eratigena atrica) The most commonly encountered large spider in Seattle homes. Body length up to 18mm with a leg span that can exceed 3 inches. Prefers ground level and lower floors basements, crawl spaces, and garage floors. Builds funnel-shaped webs in corners and behind stored items. Fast-moving when disturbed. Not venomous to humans but bites can cause localized irritation. Populations peak in late summer and fall when males move indoors searching for mates. Hobo Spider (Eratigena agrestis) Ground dwelling and most common in crawl spaces and foundation edges. Builds horizontal funnel webs close to the ground. Hobo spiders are poor climbers, so finding them above ground level usually means the infestation originated below. Often misidentified as giant house spiders professional identification matters for targeted treatment. Previously considered medically significant; current research suggests bites are minimally toxic, but sensitized individuals may react more strongly. Cellar Spider (Pholcus phalangioides) Long legged and fragile in appearance, cellar spiders thrive in damp basements, crawl spaces, and the upper corners of garages. They build irregular webs that persist for months. One cellar spider infestation can appear large due to accumulated webs from multiple generations. Common in Seattle basements year-round due to consistent moisture. Yellow Sac Spider (Cheiracanthium inclusum) Small, pale yellow, and often overlooked. Yellow sac spiders are active hunters that don’t build webs to catch prey they build silk sacs in upper wall ceiling junctions to rest during the day. Attics are a primary harborage. One of the few Seattle spiders that is genuinely venomous bites cause necrotic reactions in some individuals. Treatment requires targeting upper surfaces and junctions, not just floors and corners. Black Widow (Latrodectus hesperus) Less common than in Southern Washington but present in the greater Seattle area, particularly in dry, undisturbed crawl spaces and garage corners. Identified by the distinctive red hourglass marking on the underside of the abdomen. Medically significant bites require immediate medical attention. If black widows are suspected, professional spider extermination is strongly recommended before disturbing the area. The Three Factor System Behind Attic and Basement Spider Infestations Every significant spider infestation has the same three root causes. Treating only the visible spiders without addressing all three is why DIY treatments fail and infestations return. Factor 1: Insect population (food source) Spiders are predators that only establish where food is available. In Seattle attics and basements, common prey insects include silverfish (which thrive in paper and organic insulation), fungus gnats (drawn by damp wood and soil), drain flies, booklice, and beetles. Before treating spiders, a complete inspection should identify which insects are present eliminating the food source is essential for long term control. Factor 2: Moisture conditions Elevated moisture doesn’t just attract spiders directly it sustains the insects they eat and accelerates web building activity. In Seattle basements, moisture commonly enters through unsealed crawl space venting, condensation on cold walls, and improperly graded soil that directs water toward the foundation. In attics, inadequate ventilation causes humidity buildup. Both are treatable, and addressing them as part of spider control prevents recurrence. Factor 3: Entry points and harborage Spiders and their prey enter through foundation gaps, deteriorated window sill seals, open or damaged soffit vents, pipe penetrations, and utility entry holes. Once inside, they establish in insulation, wall voids, cardboard storage boxes, and behind HVAC equipment. These areas are rarely reached by sprays or vacuums, which is why surface level DIY treatments produce only temporary results. Signs of an Active Attic or Basement Spider Infestation These indicators suggest an established infestation rather than occasional spider sightings: Multiple webs in corners, ceiling wall junctions, or along exposed joists Egg sacs small white or tan silk bundles attached to web centers or tucked into dark corners Daily spider sightings despite regular cleaning Spiders appearing in living spaces above the basement or below the attic Visible insects (silverfish, fungus gnats, small beetles) in the same areas Heavy webbing along attic insulation batts or basement window wells Funnel-shaped webs at floor level characteristic of hobo and giant house spiders Silk sacs at ceiling-wall junctions characteristic of yellow sac spiders A single occasional spider is normal in any Seattle home. Daily or weekly sightings, visible egg sacs, and spiders moving into
Seattle Garage Spider Control Stop Arachnids Before They Move Indoors
Garages are one of the most common places Seattle homeowners find spiders. These spaces are dark, quiet, and often cluttered the perfect environment for spiders to spin webs and hunt for insects. If left unchecked, garage spiders often migrate deeper into the home, causing bigger infestations. Why Spiders Love Garages (Related: Seattle Attic & Basement Spider Exterminators) Signs of a Garage Spider Problem (See also: Seattle Hobo Spider Control and House Spider Extermination Services) Professional Spider Extermination for Garages Our Seattle spider exterminators don’t just remove visible webs we target the root of the problem: (You may also need Seattle Pest Control for Ants or Rat Abatement Services if spiders are feeding on other infestations inside your garage.) Keep Spiders From Spreading Indoors A garage infestation often means spiders are already moving toward basements, attics, or living areas. Early intervention prevents larger, more expensive problems. (Explore: Seattle Home Spider Extermination for full-house protection.)
Seattle Basement & Attic Spider Infestations Why They’re So Common and How to Stop Them
Basements, attics, and crawlspaces in Seattle homes are the perfect hiding spots for spiders. Dark, damp, and undisturbed, these areas attract both the insects spiders feed on and the spiders themselves. While most are harmless, the sheer number of webs and sightings can feel overwhelming and in some cases, venomous species may be a concern. Why Spiders Target Basements & Attics in Seattle Signs You Have a Spider Infestation Why Professional Spider Extermination MattersDIY vacuuming and sprays can help temporarily, but infestations keep returning without: AMPM Exterminators’ Approach Cross-Traffic Tie-In Sentences: Call to Action: Don’t let basements and attics turn into spider havens. Call AMPM Exterminators for fast, effective spider control in Seattle homes today.
Seattle Is Crawling With Spiders This Season Here’s What’s Really Hiding in Your Home
Seattle homeowners are reporting more spider activity this season than ever before. From basement corners to attic crawlspaces, spiders are taking advantage of the damp Pacific Northwest climate and when infestations grow, DIY sprays and cleaning won’t keep them away. At AMPM Exterminators, we’ve seen what’s really happening inside Seattle homes: hidden spider nests, egg sacs in wall voids, and entry points that let infestations come back year after year. Why Spiders Keep Coming Back in Seattle The AMPM 3-Step Spider Removal Plan Serving Seattle Homes & Businesses From homes in Capitol Hill to restaurants in Ballard, we help Seattle residents keep their spaces spider-free. Businesses especially benefit from professional spider extermination customer impressions matter, and spiders in dining or retail areas can damage trust instantly. Nearby Cities Also Dealing With Spider Problems
Emergency Ant Control Seattle: Same Day Service & 24/7 Response
IMMEDIATE HELP LINE: (206) 571 7580 If you’re seeing swarming ants, large trails, or suspect structural damage, you need emergency ant control. We provide same day emergency service for Seattle homes and businesses with active ant infestations. EMERGENCY INDICATORS (Call Now If You See These): Ants Suddenly Everywhere After Seattle Rain? Here’s Exactly What’s Happening It happened fast. Yesterday there were a few ants near the kitchen sink. This morning, after last night’s rain, there are hundreds trailing across the counter, coming up through the baseboard, appearing from somewhere you can’t identify. This is one of the most common calls we receive, and it happens on a predictable schedule every time Seattle gets a heavy rainfall. You haven’t done anything wrong. Your house isn’t unusually dirty. What you’re seeing is a specific, well documented ant behavior that the Pacific Northwest climate triggers reliably and it requires a specific response to stop. Call (206) 571 7580 for same day service. Read on to understand exactly what’s happening and why the spray under your sink will make it significantly worse. Why Seattle Rain Causes Sudden Ant Explosions Indoors Odorous house ants the small dark ant responsible for the vast majority of Seattle kitchen infestations nest in soil, under mulch, beneath concrete slabs, and inside wall voids near moisture. When heavy rain saturates the ground, two things happen simultaneously: First, soil nests flood. Ants don’t drown they evacuate. A flooded outdoor nest sends thousands of workers scrambling for higher, drier ground. The nearest option is usually your home’s foundation, slab gaps, or wall penetrations. Second, the barometric pressure drop that precedes rain increases ant foraging activity. Colonies sense the weather change and send out more scouts before the rain hits which is why you sometimes see the first ants the evening before a heavy rainfall, not the morning after. The result: what was a small, manageable colony living quietly under your front walkway becomes an overwhelming indoor invasion in the space of a few hours. The colony didn’t grow overnight. It relocated. The Worst Thing You Can Do Right Now Reach for the Raid. Odorous house ants which is almost certainly what you have if they appeared suddenly after rain and you’re in Seattle respond to repellent spray by splitting the colony. The chemical signal triggers a survival behavior called budding: the queen produces multiple sub queens, each takes a portion of the workers, and the colony fragments into several new nests in different locations. The spray kills the ants you see. But within 48 to 72 hours, you now have three or four active nests where you had one. Homeowners who spray after a rain event consistently report that the second wave is worse than the first. The correct response slow acting bait that workers carry back to all nests is counterintuitive because it means leaving visible ants alone while the bait works. A professional does this correctly. DIY bait products use incorrect formulations or get placed in the wrong locations and rarely achieve colony elimination. What to Do While You Wait for the Technician If you’ve called (206) 571 7580 and a technician is on the way, here’s how to help not hinder the process: Do not spray anything. Not Raid, not Windex, not peppermint oil, not vinegar. Anything that disrupts the pheromone trail makes it harder to trace the colony to its origin. Do not block entry points yet. Sealing gaps before treatment traps ants inside the wall. Exclusion happens after treatment, not before. Do photograph the trails. A photo showing where ants are entering and the trail direction helps the technician identify the nest location faster. Text photos to (206) 571 7580. Do remove accessible food. Seal anything open on counters. This doesn’t solve the problem but reduces reinforcement foraging while bait is being placed. Do note where the trail started. The origin point a gap at the baseboard, a crack near the dishwasher, a spot near the sliding door is the most useful information you can give the technician. Seattle’s Rain Driven Ant Calendar If you understand when this happens, you can protect against it before it starts: Season What triggers it What you’ll see Late February – March First heavy rains after dry winter Scouts appearing inside, especially near sinks April – May Sustained spring rainfall Full trail invasions after overnight rain events June – July Pre-summer pressure drop storms Carpenter ant swarm season large winged ants indoors September – October First fall rains after dry summer Second major invasion season colonies relocating before cold November – December Winter saturation events Moisture ants appearing in bathrooms often indicates a leak The two highest risk windows are April–May and September–October. If you’ve had ants before, a preventive perimeter treatment applied before these windows is significantly cheaper than emergency treatment after an invasion. When It’s More Than Just Rain Flushed Ants Most post rain invasions are odorous house ants and resolve cleanly with one professional bait treatment. But some are a sign of something more serious. Call (206) 571 7580 same day don’t wait if you see any of these alongside the ants: Large black ants (6mm) with piles of sawdust nearby. This is carpenter ant frass. Rain flushed carpenter ants mean an established colony is nesting inside or under your home’s wood structure. This is a structural damage situation, not just a nuisance. See our carpenter ant extermination page. Yellow or light brown ants appearing near a bathroom or under a sink. These are likely moisture ants, which nest in wood that is already wet and rotting. Their appearance signals an active water leak or drainage problem somewhere in the structure. See our moisture ant control page. Ants coming from an electrical outlet or switch plate. This is a same day call situation regardless of species. Ant colonies nesting inside electrical voids create a genuine fire risk. Do not attempt to treat this yourself. Winged ants indoors in large numbers. Swarms of winged ants (alates) mean a mature colony is producing reproductives either carpenter ants in May–July or odorous house ants in late summer. Swarming indoors