Ant control in Seattle typically costs $150 to $300 for common ants like sugar ants, and $250 to $500 or more for carpenter ants. AMPM Exterminators inspects first, identifies the ant, finds where it is entering and nesting, and treats the source instead of just the ants you can see. Serving Seattle and King County since 2005. Call (206) 571-7580.
Ants in your kitchen, bathroom, walls, or around your building can be difficult to control when the colony and its entry points remain hidden. Spraying the ants you see may reduce activity temporarily, but it does not always address the nest or the conditions attracting them.
AMPM Exterminators provides professional ant control and extermination services for homes, businesses, restaurants, apartments, and commercial properties throughout Seattle and King County, Washington. Our approach begins with identifying the ant activity, inspecting affected areas, and selecting a treatment strategy based on the species and location of the infestation.
Since 2005, AMPM Exterminators has helped property owners address ant problems with professional inspections, targeted pest management, and practical prevention recommendations.
Call (206) 571-7580 to discuss an ant problem at your property.
Take action with effective ant pest control services from AMPM Exterminators.
Odorous house ant (sugar ant): about 1/8 inch, brown to black, smells like rotten coconut when crushed. Found in kitchens, bathrooms, and along counters.
Carpenter ant: 1/4 to 1/2 inch, black or black and red. Found in damp or damaged wood, wall voids, decks, and window frames.
Pavement ant: about 1/8 inch, dark brown to black. Nests under sidewalks, patios, and foundations.
Moisture ant: yellowish to light brown. Found around leaks and damp or decaying wood.
Effective ant extermination starts with understanding what is happening at the property. Different ant species can nest in soil, landscaping, pavement, damp wood, wall voids, and other concealed locations.
An inspection helps determine:
AMPM Exterminators uses an Integrated Pest Management approach. That means considering the source of the infestation, the conditions supporting ant activity, and the most appropriate treatment options rather than relying only on visible surface spraying.
Many Seattle homeowners use the term “sugar ants” when describing small ants found around kitchen counters, sinks, cupboards, and food storage areas.
In the Pacific Northwest, sugar ants are often identified as odorous house ants (Tapinoma sessile). These ants are attracted to food and moisture and may establish trails through kitchens, bathrooms, wall openings, and other areas.
Odorous house ants can be difficult to control because colonies may have multiple nesting locations. Disturbing a colony with an inappropriate treatment can sometimes contribute to colony splitting, a process known as budding.
Professional sugar ant control focuses on identifying the ant activity, locating likely nesting and entry areas, and selecting an appropriate treatment method. Baits may be useful in some situations, while other conditions may require different measures.
Learn more about sugar ant and odorous house ant extermination in Seattle and King County.
This is the most obvious sign of an infestation. You may see ants foraging for food in your kitchen, bathroom, or other areas of your home.
Ants leave pheromone trails to help other ants find food and water. You may see these trails on countertops, floors, or walls.
Ant nests can be located outdoors or indoors. Look for piles of dirt near your foundation or in cracks and crevices in your walls.
Seeing a few dead ants occasionally is not a cause for concern. However, if you’re seeing a lot of dead ants, it could be a sign of a larger infestation.
Call a professional immediately if ants return within 48 hours of spraying, appear in multiple rooms, emerge from electrical outlets or baseboards, or if you see large black ants at night near wood structures. Here is exactly what AMPM Exterminators does that DIY products cannot:
1. Onsite Inspection: Our licensed technician inspects your entire King County property interior and exterior mapping ant trails, locating entry points, identifying nesting sites, and measuring moisture levels in affected walls with a professional moisture meter. Most homeowners have never seen the actual entry point their ants are using. We find it every time.
2. Species Identification: We collect a specimen and confirm the exact species before selecting any treatment. This single step is what separates professional treatment from DIY failure. Carpenter ants, odorous house ants, moisture ants, and pavement ants each require different products and application methods. The wrong treatment produces zero results or makes the infestation worse.
3. Targeted Treatment: We apply the right solution for your specific species non repellent gel bait for odorous house ant and sugar ant colonies that workers carry back to the entire colony undetected, insecticidal dust injected directly into wall voids for carpenter ant satellite nests, and exterior perimeter barrier treatment for all species. All products are pet safe and child safe when applied by our WSDA licensed technicians.
4. Entry Point Sealing: We locate and permanently seal every access point ants are using to enter your home gaps around pipes, foundation cracks, window frames, door sweeps, and utility penetrations. Important: we always eliminate the colony first, then seal. Sealing before elimination traps ants inside and forces them to spread to new areas of your home.
5. Ongoing Prevention & Monitoring: Many King County ant species especially carpenter ants require ongoing seasonal monitoring. Our quarterly prevention plan at $100 to $175 per quarter keeps your home protected year-round and catches new activity before it becomes a full infestation.
6. Detailed Service Report: After every visit you receive a full written report of what was found, what was treated, what products were used, and what prevention steps to take going forward. You have a complete record of your property’s pest control history.
Tiny dark ants appearing around a kitchen sink, dishwasher, countertop, pantry, or bathroom can be frustrating, especially when they return after cleaning or using store-bought sprays.
The term “little black ant” does not identify one specific species. Several small ant species can look similar, and odorous house ants should not automatically be assumed to be the same insect as a true little black ant.
Correct identification matters because treatment depends on the species, nesting location, and conditions around the property.
If small ants keep appearing in the same area, an inspection can help determine whether they are entering from outdoors, traveling through wall or plumbing openings, or nesting closer to the building.
Carpenter ants are larger ants that excavate galleries in wood to create nesting areas. They do not eat wood as termites do, but their nesting activity can damage wood, particularly when a colony is established in damp or deteriorating material.
Signs that may warrant a carpenter ant inspection include:
Finding ants does not automatically mean that structural damage has occurred. A professional inspection can help distinguish ordinary foraging activity from possible nesting inside a structure.
For more information, visit our carpenter ant control and extermination information for Seattle.
Not every ant problem in King County involves sugar ants or carpenter ants.
Moisture ants may be associated with damp or decaying wood. Their presence can be a reason to investigate possible moisture conditions, including leaks, poor drainage, or water intrusion. Treating the ants without addressing an underlying moisture problem may not resolve the conditions attracting them.
Pavement ants commonly nest in soil beneath sidewalks, driveways, patios, and foundation edges. They may enter buildings while searching for food.
Treatment depends on the ant species, nest location, and activity around the property.
Most pest control companies will tell you carpenter ants cause structural damage. What they do not tell you is the full financial picture and for Seattle homeowners, the numbers are significant enough to affect your home’s sale price, your insurance coverage, and your family’s safety in ways that go far beyond the cost of extermination.
Ant Damage and Seattle Real Estate Transactions
Carpenter ant damage is one of the most common findings on prepurchase pest inspections in King County and one of the most negotiated repair items in Seattle real estate transactions. Washington State law requires sellers to disclose known pest damage on the Seller Disclosure Statement (Form 17). Undisclosed carpenter ant damage discovered after closing has been the basis of legal disputes between buyers and sellers throughout King County.
For sellers: Untreated carpenter ant damage discovered during a buyer’s inspection typically results in one of three outcomes a price reduction averaging $3,000 to $15,000 depending on severity, a repair credit that must be completed before closing, or the buyer walking away entirely. A $400 carpenter ant treatment completed before listing can prevent a $10,000 price reduction during escrow.
For buyers: If you are purchasing a home in Seattle particularly in neighborhoods with older housing stock like Ballard, Wallingford, Queen Anne, Capitol Hill, Beacon Hill, or West Seattle request a Wood Destroying Organism (WDO) inspection separately from the general home inspection. General inspectors are not licensed to probe for carpenter ant damage the way a Washington State certified WDO inspector is. AMPM Exterminators provides certified building pest inspections for real estate transactions throughout King County. Call (206) 571 7580.
The Electrical Fire Risk Nobody Talks About
Carpenter ants do not just damage wood they excavate through wall insulation and chew through electrical wiring insulation inside wall voids. This is one of the most underreported risks of carpenter ant infestations in Seattle homes. When carpenter ant galleries intersect with electrical wiring which is common in older King County homes where wiring runs through the same wall cavities ants inhabit the ants strip insulation from wire casings while excavating. Exposed wiring inside wall voids is a direct fire risk. Seattle Fire Department reports consistently list electrical faults originating in wall voids as a leading cause of residential structure fires in older Seattle neighborhoods. If you have a known or suspected carpenter ant infestation and your home was built before 1980, have both an exterminator and an electrician assess your walls. AMPM Exterminators documents all locations of ant activity for your electrician’s reference.
King County Neighborhoods at Highest Ant Damage Risk By Housing Era
Twenty years of treating ant infestations throughout King County has shown us a clear pattern ant damage risk correlates directly with when and how your home was built:
Homes built before 1940 Ballard, Fremont, Wallingford, Georgetown, Columbia City: Original old growth Douglas fir framing ironically more resistant to carpenter ants when dry, but decades of settling have created foundation gaps, deteriorated vapor barriers, and moisture intrusion points that raise wood moisture content above the 15% threshold carpenter ants require. These homes also frequently have knob and tube wiring inside the same wall voids.
Homes built 1940 to 1970 West Seattle, Beacon Hill, Rainier Valley, Lake City, Shoreline: Post war construction used smaller dimensional lumber with less natural rot resistance than old growth timber. Many homes in this era have original crawl spaces with deteriorated vapor barriers and inadequate ventilation creating the perfect moisture conditions for both carpenter ants and moisture ants simultaneously.
Homes built 1970 to 1990 Bellevue, Kirkland, Renton, Kent: This era introduced wood based composite materials OSB sheathing, particle board, and engineered lumber that absorb moisture faster than solid wood and are significantly more vulnerable to carpenter ant excavation once moisture intrusion begins. Many homes from this era have also reached the age where original caulking around windows and doors has fully failed.
Homes built 1990 to 2010 Sammamish, Issaquah, Redmond, Bothell: Tighter construction with modern vapor barriers reduces carpenter ant risk but creates a different problem. Reduced air exchange in tightly sealed homes creates interior moisture buildup that condenses inside wall cavities, raising wood moisture levels and creating ideal moisture ant conditions. Many moisture ant infestations we treat in newer King County homes trace back to condensation rather than leaks.
New construction after 2010 All King County cities: New construction is not immune. Construction phase ant establishment where carpenter ants colonize wood framing during the months a structure sits open before exterior sheathing and roofing is complete is a recognized problem in King County new development. Lumber stored on wet ground before installation, combined with the open structure’s exposure to rain, creates ideal ant nesting conditions that can result in an established colony before the homeowners move in.
The Real Cost Comparison Treat Now vs. Wait
This is the financial data no competitor publishes because most companies do not track it across 20 years of service calls the way AMPM Exterminators does:
| Scenario | Treatment Cost | Structural Repair Cost | Total Cost |
|---|---|---|---|
| Treat at first ant sighting | $250 – $400 | $0 – $500 (minor) | $250 – $900 |
| Wait 3 months | $250 – $400 | $800 – $1,500 (moderate) | $1,050 – $1,900 |
| Wait 6 months | $300 – $500 | $1,500 – $4,000 (significant) | $1,800 – $4,500 |
| Wait 1 year | $300 – $600 | $3,000 – $8,000 (severe) | $3,300 – $8,600 |
| Wait 2+ years | $400 – $800 | $8,000 – $25,000 (structural) | $8,400 – $25,800 |
A mature carpenter ant colony excavates 1 to 2 cubic feet of structural wood per year. At Seattle contractor rates averaging $85 to $125 per hour for carpentry, the repair cost of delayed treatment grows faster than almost any other home maintenance issue. The extermination cost stays roughly the same only the repair bill grows.
The Moisture Ant Warning Most Seattle Homeowners Miss Completely
Moisture ants do not damage sound wood. They nest exclusively in wood with 15% or higher moisture content wood that is already being destroyed by water. This means a moisture ant sighting is not an ant problem. It is a water damage problem that has reached the stage where insects have detected it before you have.
In King County we have found moisture ant colonies warning of:
Every moisture ant treatment AMPM Exterminators performs includes a free professional moisture meter assessment identifying the water source. We have found active water damage that homeowners had no idea existed in hundreds of King County properties over 20 years. The ants were the only visible symptom of damage already happening behind the walls.
For more information on wood destroying insects, visit our Carpenter Ant Control Seattle section.
Ants can enter through small openings around doors, windows, foundations, utility lines, plumbing penetrations, and other building connections.
AMPM Exterminators provides residential ant control for houses, condominiums, townhomes, and other properties throughout Seattle and King County.
Our service may include inspection of affected areas, identification of likely entry points, targeted treatment, and recommendations for reducing conditions that attract ants.
Ant activity in a commercial building can affect food storage, work areas, tenant spaces, customer areas, and property operations.
AMPM Exterminators provides commercial ant control for businesses and managed properties, including:
Commercial pest management requires attention to more than the visible ant activity. Inspection, monitoring, treatment documentation, and practical prevention recommendations can help businesses manage recurring pest concerns.
AMPM Exterminators uses Integrated Pest Management principles and provides service documentation to support property management and operational records.
Ants in a commercial setting especially food service, restaurants, or warehouses create serious health code and liability risks. We provide discreet, effective commercial ant control throughout King County with service contracts available for ongoing protection.
Carpenter Ant Extermination: Professional eradication of wood damaging carpenter ants. We locate satellite colonies, treat nest sites, and protect the structural integrity of your home.
Sugar Ant & Odorous House Ant Control: Elimination of common kitchen invaders. We use targeted baits and exclusion techniques to stop trails and prevent reinfestation.
See our Ants in Kitchen Removal Seattle page for a detailed guide.
Moisture & Pavement Ant Removal: Effective solutions for ants attracted to damp wood or nesting under pavement. Treatment includes moisture control advice to solve the root cause.
Visit our Moisture Ants Seattle: Free Water Damage Detection & Treatment page.
Emergency Ant Service: 24/7 same day response for urgent, large scale infestations throughout King County. We provide immediate relief and a long term solution.
Commercial Ant Control: Customized pest management plans for businesses, restaurants, and multiunit properties to meet health codes and protect your reputation.
Ant Prevention & Exclusion Plans: Proactive inspections and sealing services designed to keep ants from entering your property in the first place.
AMPM Exterminators has served Seattle and surrounding King County communities since 2005.
Property owners and businesses can expect:
We focus on identifying the conditions contributing to pest activity and recommending an appropriate response for each property.
AMPM Exterminators provides ant inspection and extermination services throughout Seattle, King County, and the Eastside.
Service areas include:
Seattle: Queen Anne, Magnolia, Ballard, Green Lake, Wallingford, Laurelhurst, Capitol Hill, West Seattle, and surrounding neighborhoods.
Eastside: Bellevue, Redmond, Kirkland, Sammamish, Issaquah, Medina, Yarrow Point, Clyde Hill, and surrounding communities.
South King County: Renton, Kent, Tukwila, Auburn, Federal Way, Burien, Des Moines, and nearby areas.
If you are seeing ants in your home, restaurant, apartment building, or commercial property, contact AMPM Exterminators to discuss the problem and available service options.
No matter where you are in King County from the streets of Seattle to the neighborhoods of Sammamish or what type of ant has invaded your space, AMPM Exterminators is your local, trusted solution.
Contact us today for a free, no obligation inspection and quote.
Call: (206) 571 7580
Email: info@ampmexterminators.com
Address: 3213 W Wheeler St, Suite 81, Seattle, WA 98199
Service Hours: 6:00 AM to 2:00 AM, Daily | Emergency Service: 24/7
Ready to live ant free? Schedule your free inspection for Seattle or any King County city now.
| Ant Type | Size | Color | Damage | Where Found |
|---|---|---|---|---|
| Carpenter Ant | Large (½ inch) | Black | Destroys wood structures | Walls, decks, attics |
| Odorous House Ant (Sugar Ant) | Tiny (⅛ inch) | Dark brown/black | Contaminates food | Kitchens, bathrooms |
| Moisture Ant | Small (¼ inch) | Yellow/brown | Damages wet wood | Bathrooms, basements |
| Pavement Ant | Small (⅛ inch) | Dark brown | Minimal | Driveways, sidewalks |
| Feature | Carpenter Ants | Termites |
|---|---|---|
| Body Shape | Pinched waist, elbowed antennae | Thick waist, straight antennae |
| Wood Damage | Smooth, clean tunnels with sawdust (frass) | Rough, mud-filled tunnels |
| Wings | Front wings longer than back | All four wings equal length |
| Activity | Mostly nocturnal, visible trails | Hidden, rarely seen |
| Treatment Cost | $150 - $500 | $500 - $2,500 |
| Service | Price Range |
|---|---|
| Initial Inspection | Free |
| Sugar Ant Treatment | $150 - $300 |
| Carpenter Ant Treatment | $250 - $500 |
| Moisture Ant Treatment | $200 - $400 |
| Quarterly Prevention Plan | $100 - $175/quarter |
*Prices vary based on ant species, property size, and infestation severity. Call (206) 571-7580 for a free estimate.*
Why do I keep getting ants in my kitchen?
Ants may continue entering a kitchen because they have found food, water, or a protected route into the building. They may travel through gaps around plumbing, windows, doors, cabinets, and other openings. Cleaning food residue helps, but recurring activity may require identifying the entry point and nesting location.
How much does ant extermination cost in Seattle?
Most Seattle homeowners pay $150 to $300 for a one-time treatment of common ants such as odorous house ants (sugar ants) and pavement ants. Carpenter ants typically cost $250 to $500 or more because the nest has to be located, sometimes inside walls. Follow-up visits are often $40 to $70. AMPM Exterminators gives you a written quote before treatment begins.
Are sugar ants and odorous house ants the same?
The term sugar ant is commonly used for small ants attracted to sweet foods. In the Seattle area, homeowners often use it to describe odorous house ants. However, common names are not always reliable species identification. A closer inspection may be needed to distinguish odorous house ants from other small ant species.
Are little black ants the same as sugar ants?
Not necessarily. Little black ant is a common name that can refer to a different species from the odorous house ant. Small ants can look similar, so color and size alone may not provide a reliable identification. Correct identification helps determine the appropriate treatment.
Can spraying ants make the infestation worse?
It can in some circumstances. Certain ant species, including odorous house ants, may respond to colony disturbance by splitting into additional nesting groups. Spraying visible ants without identifying the species and colony conditions may therefore be counterproductive. Treatment should be selected according to the ant species and the infestation.
How do professional exterminators find where ants are entering?
A technician looks for ant trails, recurring activity, gaps around windows and doors, plumbing and utility openings, foundation cracks, landscaping connections, and other possible access points. The inspection also considers nearby moisture and food sources that may be attracting ants.
What is the best treatment for odorous house ants?
The appropriate treatment depends on the location and extent of the infestation. Baits may be useful because foraging ants can carry bait material back toward nesting areas. Other treatment methods may be appropriate depending on the inspection findings. No single product or method is right for every ant infestation.
How long does professional ant treatment take to work?
Most homeowners see ant activity drop within a few days to two weeks after baiting, though a full colony can take longer. You may see more ants for the first few days, which usually means the bait is being carried back to the nest. Carpenter ant nests may need a follow-up visit.
Do carpenter ants damage houses in Seattle?
Carpenter ants excavate galleries in wood for nesting. They do not consume wood as food, but established nesting activity can damage wood, particularly where moisture or decay is present. If large ants or sawdust-like frass are appearing near wood, an inspection can help determine whether carpenter ants are involved.
How can I tell carpenter ants from termites?
Carpenter ants have a pinched waist, elbowed antennae, and front wings longer than their back wings. Termites have a thick, straight waist, straight beaded antennae, and four wings of equal length. Termites leave mud tubes, while carpenter ants leave sawdust-like frass. The treatments are completely different, so if you’re unsure, call (206) 571-7580.
Do ants in an apartment building require professional treatment?
Recurring ant activity in apartments may involve shared walls, plumbing openings, utility areas, landscaping, or other parts of the building. Treating only one unit may not address activity originating elsewhere. Property managers may need a coordinated inspection and treatment plan for affected units and common areas.
Does AMPM Exterminators provide commercial ant control?
Yes. AMPM Exterminators provides commercial pest control services for restaurants, retail businesses, offices, apartment properties, warehouses, and other commercial facilities. Service recommendations are based on the building, pest activity, and operational requirements.
Do I need to leave my home during ant treatment?
In most cases, no, but that depends on the products and application methods selected for the property. Always follow the technician’s instructions and the product label for re-entry, ventilation, and other precautions. Your technician can explain any preparation or temporary access restrictions before treatment.
Does AMPM Exterminators provide ant control in Bellevue, Renton, Kirkland, and Redmond?
Yes. AMPM Exterminators serves Seattle and communities throughout King County and the Eastside, including Bellevue, Renton, Kirkland, Redmond, Sammamish, Issaquah, Kent, Tukwila, Auburn, and Federal Way.
If ants keep returning to your kitchen, bathroom, home, apartment building, restaurant, or commercial property, the first step is identifying the source of the activity.
Contact AMPM Exterminators for professional ant control in Seattle and King County.
AMPM Exterminators
Phone: (206) 571-7580
Website: https://ampmexterminators.com/
Address: 3213 W Wheeler St #81, Seattle, WA 98199
Professional ant inspection, extermination, and pest management for Seattle, King County, and Eastside properties.
We are here to help you 7 days a week and respond within 24 hours. Plus, you can find most answers to your questions right on FAQ page.
