Pest control and exterminators in Westport, CT

By Hamad G., last reviewed October 20, 2026. Independent guide, not a pest control company.

Westport, CT residents can drop a tick at the Aspetuck Health District on Bayberry Lane for a $10 processing charge, or mail it to CAES for free. Westport’s CAES row, which includes the district’s submissions, held 277 ticks in 2025, the most of the county’s 23 towns, and 33% of those tested carried Lyme bacteria.

Found a tick or a nest right now?

Tick bite: save the tick. Save it dry in a sealed bag; send it to CAES for free testing through your health department or by mail. See a doctor if a rash or fever follows. Aspetuck Health District, 180 Bayberry Lane, sends it to CAES for a $10 charge; mailing it to CAES is free. details about tick drop-off in Westport
Nest by the door: keep back. Keep people and pets away from the nest; trouble breathing or hives all over need medical care right away.
Droppings: air the room, then wet-clean. Air the room for 30 minutes, wear gloves and soak droppings with disinfectant or bleach before wiping; never sweep or vacuum them.
Suspected bed bugs: report it. Renters tell the landlord, who has five business days to inspect; homeowners ask a DEEP-registered pest control company to inspect.

What each step involves

Hiring an exterminator in Westport

Check its DEEP registration.
Get products, labels and notices in writing.
Compare two written quotes.
Bitten in Westport? Aspetuck Health District forwards the tick to CAES for $10, or mail it free; a result informs a doctor, not a spray.

The full checklist

Pest control services in Westport

Most Westport households live in a detached house with a yard, so the pest questions here start outdoors. After a bite, keep the tick dry in a sealed bag, fill out the tick form and leave both at the Aspetuck Health District, which serves Easton, Weston and Westport. The district forwards every tick to the Connecticut Agricultural Experiment Station (CAES), and the result comes by email. Write down where the person had been that day: the yard edge, a trail or a playing field.

The other calls that come with a yard are seasonal. Yellowjackets build nests in the ground, in wall voids and under decks from spring on, and their colonies are largest in late summer. Carpenter ants and termites send out winged swarmers in spring and early summer, and the two are easy to confuse. White-footed mice, CAES notes, readily enter and nest in buildings, especially in winter.

Spraying a yard, treating a wall void or baiting for termites is work for a certified applicator from a business registered with the Department of Energy and Environmental Protection (DEEP), which must show its registration number on written contracts, vehicles and newspaper, billboard and directory ads under CGS 22a-66c. This guide sells no treatment and lists no companies; the about page says who is behind it. The guides, each tied to Westport:

Tick control for Westport yards: where and when spraying helps: Westport’s CAES row held 277 ticks in 2025, the most of the county’s 23 towns, district submissions included.
Wasp and hornet nests in Westport walls, decks and lawns: with 87.7% of housing units detached, there is plenty of siding and decking for yellowjackets to nest in.
Termite inspection when buying a Westport house and termite control for Westport foundations: 39.8% of Westport homes predate 1960; the median dates from 1967.
Carpenter ants in Westport porches and decks: spring swarmers could be either pest, and the side-by-side guide to carpenter ants and termites shows the differences in antennae, waist and wings.
Mouse control for Westport houses, garages and sheds: CAES’s tick handbook notes that white-footed mice nest in stone walls and firewood and move into buildings in winter.
Bed bugs in Westport rentals and after travel: only 11.2% of Westport homes are rented, by the Census Bureau’s tenure count, the second-lowest share of the 10 towns with pages in this guide, after Trumbull’s 10.3%, so most cases are a homeowner’s call.
Cockroach control for Westport kitchens: Westport has no cockroach record; the statewide CAES fact sheet is the source, and it says cockroaches can breed year-round indoors.
Commercial pest control for Westport restaurants and shops: the Aspetuck Health District is the local health department for Westport, Weston and Easton.
Spotted lanternflies in Westport: a county record, not a town one: CAES reported them in Fairfield County in 2020 and in every county by 2025.

Nearby towns: to the west, Norwalk, where Connecticut’s first lone star tick colony was found; to the east, Fairfield’s $5 town tick test; and a few towns down the coast, Darien, whose 109 ticks were mostly untestable.

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Costs, choosing a company and rentals

Average treatment for a standard infestation (national): $171 (This Old House, March 2026).

Pest calendar

Ticks and mosquitoes by month (CAES)
Pest	Peak months	January	February	March	April	May	June	July	August	September	October (this month)	November	December
Blacklegged tick nymphs, ¹	May–Jul	none reported	none reported	none reported	none reported	peak	peak	peak	active	active	none reported	none reported	none reported
Blacklegged tick adults, ¹	Mar–Apr, Oct–Nov	active	active	peak	peak	active	none reported	none reported	none reported	none reported	peak	peak	active
Mosquitoes (West Nile virus risk), ²	Jul–Sep	none reported	none reported	none reported	none reported	none reported	active	peak	peak	peak	active	none reported	none reported

Peak: the busiest months
Active
None reported
October (this month)

Sources

See the full pest calendar

Why pests in Westport live mostly in the yard

Why does Westport send CAES more ticks than other Fairfield County towns?

Westport sends CAES more ticks partly because its CAES row includes the Aspetuck Health District’s submissions. CAES’s 2025 tick testing summary lists 277 blacklegged ticks under Westport, the most of the county’s 23 towns, and that row includes ticks sent through the health district based in the town; Weston appears separately for ticks its residents sent on their own, 18 that year. The Aspetuck Health District takes ticks from Easton, Weston and Westport residents and sends them all to CAES. Westport itself is small, with 27,528 residents in the Census Bureau’s population estimate, so the total says more about how many people send ticks than about Westport’s woods. Only 166 of those 277 were tested; ticks from pets, unfed ticks and males are not tested.

Is spraying a Westport yard for ticks worth it?

Spraying a Westport yard can cut ticks sharply if it targets the right strip. The CAES Tick Management Handbook calls acaricides “the most effective way to reduce ticks, particularly when combined with the landscaping changes,” and says one application of most ornamental-turf products gives 85-90% control or better. It aims the spray at lawn edges along woods, stone walls and plantings and a few yards into the woods, once in May or early June for nymphs, with October as an option for adults. Its cautions matter on a coastal lot: no spraying in wind over 10 mph or within 24 hours of rain, and none within 25 feet of wetlands or 100 feet of coastal marshes or streams. Under CGS 22a-66a, the applicator must give you the product’s label details and post signs for an outdoor job within 100 yards of a property line.

Do lower-toxicity tick methods work in a Westport yard?

Some do, with more effort. The CAES Tick Management Handbook found that some organic products “are less effective, breakdown rapidly, and multiple applications may be required.” Natural pyrethrin with piperonyl butoxide gave limited control in residential landscapes; mixed with insecticidal soap or silicon dioxide it did better, but apart from a desiccant there was little residual activity, so at least two applications may be needed. The handbook adds that “Even organic pesticides are toxic to fish and aquatic invertebrates,” which matters for a Westport property near marsh or stream. Host-targeted methods are mixed: permethrin-treated cotton tubes for mice failed to reduce infected nymphs over three years on sites of about 4 acres or less in Connecticut and New York, while deer fencing is “the most effective method” to keep deer off a property. Landscaping alone may not cut disease, since one infected bite is enough.

Why do yellowjackets turn up inside Westport houses in the fall?

Yellowjackets inside a Westport house in the fall usually mean a nest in a wall. The CAES yellowjacket fact sheet says yellowjackets “flying inside the home during the fall may indicate a nest in a nearby wall cavity.” Queens start nests in spring, colonies peak at 1,000 to 4,000 insects in late summer, and each nest is used for one season only. In a town where 87.7% of housing units are detached houses, by the Census Bureau’s units-in-structure count, that means plenty of siding, soffits and decks to nest in. The sheet’s advice is specific: do not plug the entrance hole, and know that “Spraying individual yellowjackets will not control additional activity.” For nests inside buildings it suggests a professional. Anyone stung who has swelling of the whole limb, trouble breathing, or hives over the body needs immediate medical care.

How can a Westport homeowner tell termites from flying ants?

Look at the antennae, the waist and the wings. The CAES termite fact sheet says termite swarmers have straight, beaded antennae, a broad body and wings of equal length, while ants have elbowed antennae, a narrow waist and forewings longer than the hind wings. Termites swarm “usually March – June” and leave pencil-sized mud tubes on foundations but no sawdust; carpenter ants leave piles of sawdust and debris, and they swarm from late spring to mid-summer, according to the CAES carpenter ant fact sheet. Westport’s median year built is 1967, and 39.8% of homes predate 1960, by the Census Bureau’s year-built counts. Collect a few swarmers in a jar before calling anyone; an identification settles which problem you have.

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Ticks and mosquitoes in Westport, the top tick sender

Westport’s 2025 CAES row lists 277 blacklegged ticks, up from 213 in 2024. CAES tested 166 of Westport’s 277 ticks in 2025, and 55 of them (33%) carried Borrelia burgdorferi, the Lyme bacterium, according to the 2025 summary; in 2024 the figure was 40 of 164 (24%), per the 2024 summary. Both years count ticks residents chose to submit, through the health district or on their own, so they track how often people send ticks in rather than tick numbers outdoors. For human illness, CDC’s Lyme dataset reports 534 cases in 2023 across the Western Connecticut planning region, which includes Westport.

CAES traps mosquitoes on North Avenue and at Sherwood Island State Park. Both found West Nile virus in each of the last two seasons: 4 and 2 positive samples in 2025, for 6, per the 2025 final summary, and 5 and 1 by October 13, 2026, again 6, per the 2026 summary. Each positive is one tested pool from one trap. Statewide in 2026, CAES’s program page reports West Nile-positive mosquitoes in 48 towns. Compare Westport with its neighbors in the tick season guide or the CSV of all 23 Fairfield County towns.

The sun setting over the beach at Sherwood Island State Park, with a leaning line of wooden snow fence across the sand and bare trees behind. — The beach at Sherwood Island State Park, Westport, in March 2017. One of Westport’s two CAES mosquito traps is in the park; both found West Nile virus in each of the last two seasons. Photo: Karl Thomas Moore, CC BY-SA 4.0; edited.

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Exterminator prices and registration checks for Westport

How much does it cost to have an exterminator come out to a Westport house?

No Westport or Connecticut rate is published, so the figures are national and depend on how often someone comes. Bob Vila gives $40 to $70 for a monthly visit and $100 to $300 for a quarterly one (national data, as of September 2024); Fixr says contracted visits through the year run $450 to $1,188 a year (national, as of January 2025). Neither publisher prices a season of yard tick spraying, so ask a Westport firm for the number of visits in writing. The cost guide lists the rest.

What should a Westport homeowner check before a yard spray?

Three things. The business’s DEEP registration number, which CGS 22a-66c puts on its contract and ads. The label details it must hand over under CGS 22a-66a before agreeing to the job, with a notice about DEEP’s neighbor notification registry. And the signs it must post for an outdoor application within 100 yards of a property line, which neighbors on a small Westport lot will see.

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Offices to call in Westport

Aspetuck Health District: 180 Bayberry Lane, Westport, CT 06880; Monday to Friday, 8:30 am to 4:30 pm. It is the local health department for Easton, Weston and Westport.
Tick submissions: complete the district’s tick form and drop it off with the tick. “There is a $10 service charge for AHD processing”; all ticks go to CAES, and CAES emails results in one to two weeks.
Dead bats and possible rabies exposure: call the district first at 203-227-9571, before bringing in any animal; after a bite or scratch, see a doctor or go to an emergency room.
CAES Tick Testing Laboratory: residents who would rather not pay the district’s $10 can post a tick straight to New Haven at no cost; the submission page covers packing.

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Sources

Frequently asked questions

Is it worth spraying your yard for ticks?

It can be, if the spray goes where ticks live. The CAES Tick Management Handbook calls acaricides the most effective way to reduce ticks, especially combined with landscaping, and says one application of most products gives 85-90% control or better. In a Westport yard, that means the woods' edge, stone walls and plantings, not the open lawn.

When should I start spraying for ticks?

Late spring. The CAES handbook suggests spraying once in May or early June to target nymphs, and says an October application may be used for adult blacklegged ticks. A certified applicator in Connecticut must also tell you about the state's neighbor notification registry before agreeing to the job.

Where do I take a tick in Westport, CT?

To the Aspetuck Health District, 180 Bayberry Lane, Westport, weekdays 8:30 am to 4:30 pm. Fill out the tick form and drop it off; the district charges a $10 processing fee and sends every tick to CAES, which emails results in one to two weeks. You can also mail it to CAES yourself at no cost.

Has West Nile virus been found in Westport mosquitoes?

Yes, in both 2025 and 2026. CAES traps at North Avenue and Sherwood Island State Park found it each year: 6 positive samples in 2025 and 6 again by October 13, 2026. Each sample is a batch of mosquitoes tested together, so the figures track where the virus circulates, not how many people are infected.