Key Largo is the first island you reach on the Overseas Highway, and its canal homes, seasonal houses, marinas and dive resorts all sit on a narrow strip of fossil reef surrounded by water. That setting brings its own mix of termites, roof rats, mosquitoes and iguanas. Toro Pest Management has protected South Florida since 1969, and we plan every Key Largo visit around how island homes are built and used.
- Since 1969Third generation, protecting South Florida
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Why Key Largo Has Its Own Pest Challenges
Key Largo is the largest island in the Florida Keys, about 33 miles long, and the first one you reach on the Overseas Highway after leaving Florida City. The community called Key Largo is not a city. It is an unincorporated area and census-designated place governed by Monroe County, sharing the island with North Key Largo to the northeast and Tavernier to the southwest. About 12,400 people lived there in the 2020 census, and Miami is roughly 57 miles to the north.
The island itself is a fossilized coral reef. Its ground is Key Largo limestone, its highest ridge rises only about 15 feet above sea level, and its shoreline is rocky rather than sandy. Homes are built on that rock along dredged canals, bays and boat basins, so almost every property is close to water, salt air and a dock.
Key Largo also lives on visitors. It sits between Everglades National Park and John Pennekamp Coral Reef State Park, the first undersea park in the United States, and it is often called the “Diving Capital of the World.” Dive shops, marinas, resorts and vacation rentals line U.S. 1. Many homes are only part-time: in the 2020 census, about 38 percent of the community’s housing units were vacant, a number that includes seasonal homes. A house that sits closed for weeks gives pests a quiet head start.
Common Pests in Key Largo and Why They Show Up
West Indian Drywood Termites
UF/IFAS Monroe County Extension lists the West Indian drywood termite as one of the two termites that cause real economic damage in the Keys. It lives only inside wood in buildings, boats and furniture, protected from the rain, and it swarms from April to June. Older wood-frame homes and antique furniture brought from the mainland are common hiding places. Learn more about drywood termites.
Signs to watch for: tiny, hard pellets that collect below baseboards, windowsills and furniture.
Asian Subterranean Termites
The Asian subterranean termite is the other major termite in the Keys. Its winged adults fly between February and April, from dusk into the night, and are drawn to lights. Thin, rocky ground is not a barrier: UF researchers have found it infesting a boat near Key West, and UF/IFAS reports it damaging some mature native trees in the Keys.
Signs to watch for: mud tubes along slabs, pilings and walls, and piles of wings by doors and lamps.
Roof Rats
Coconut palms, sea grape and fruit trees give roof rats food and cover, and overhanging fronds become a bridge to the roof. Once inside, they nest in attics and walls, especially in homes that stand empty part of the year. Our rodent control combines trapping with sealing the gaps they use.
Signs to watch for: droppings in storage areas and scratching overhead at night.
Mosquitoes
Mangrove shorelines and salt marshes produce mosquitoes after high tides and summer rain, and the Aedes aegypti mosquito breeds in small pockets of water around the house: boat covers, buckets, bromeliads and planters. It bites in daylight, which is why it finds you on the dock. Our mosquito control targets the shady spots where adults rest.
Green Iguanas
UF/IFAS considers the green iguana established in much of southern Florida, including the Keys. Iguanas eat hibiscus and other ornamentals, leave droppings on docks, pool decks and patios, and dig burrows at the base of seawalls, which can weaken them over time. See our wildlife services.
Cockroaches
American cockroaches, the palmetto bugs, move in from mulch, drains and storage sheds, while German cockroaches arrive in boxes and grocery bags and breed in kitchens. In vacation rentals with a new group every week, cockroaches can take hold between cleanings. Read our cockroach guide.
We also get calls in Key Largo about bed bugs in rentals and guest rooms, ghost ants and other ants trailing into kitchens, spiders on screened porches and under docks, and wasps nesting in eaves and boat lifts.
Residential Pest Control in Key Largo
Key Largo homes come in many forms: stilt homes and ground-level houses on canal lots, mobile homes in established parks, waterfront estates and condo units near the marinas. Each has its own weak points. Raised homes have open areas underneath where wood, storage and plumbing meet. Canal homes have docks, boathouses and seawalls that invite iguanas and termites. Seasonal homes have long stretches with no one around to notice a problem.
A residential service visit from Toro begins with a free inspection of the house, the yard and, when you want, the dock and boat storage. We look for termite pellets and mud tubes, rodent entry points along the roofline, standing water and the plants that feed pests, then recommend a plan for how you use the house. Owners who are away part of the year can schedule service before they return. Our 110% Satisfaction Guarantee stands behind the work: if the bugs come back, so will Toro, at no additional cost to you.
Buying in Key Largo? Ask for a termite inspection before closing, and mention any wooden furniture or boats that come with the sale. Drywood colonies often hide in exactly those items.
Commercial Pest Control for Key Largo Businesses
Key Largo’s economy runs on the water. Dive operators, fishing charters, marinas, waterfront restaurants, resorts and rental managers all depend on guests who notice everything, and a sighting in a room or dining area can show up in reviews the same day.
We provide commercial pest control for:
- Resorts, hotels and vacation rentals, with bed bug, cockroach and rodent programs scheduled between check-outs.
- Restaurants, bars and food service, where flies, roaches and rats are a health inspection issue.
- Property management companies, condo associations and rental agencies handling homes for absent owners.
- Retail stores, dive shops and tackle shops along U.S. 1.
- Schools and government buildings.
Every commercial plan comes with written service reports you can show inspectors. Our technicians are trained at the TORO Institute, the training facility at our Miami headquarters, where on-staff entomologists teach food safety, sanitation, structural practices and pest management techniques.
Key Largo Pest Calendar: What to Expect Each Season
| Season | What is active in Key Largo | What to do |
|---|---|---|
| February to April | Asian subterranean termite flights from dusk into the night, ants building up | Switch off porch and dock lights during swarms and save wings for identification. |
| April to June | West Indian drywood termite swarms, ant colonies expanding as the weather heats up | Book a termite inspection and check furniture and wood trim for pellets. |
| Summer and fall (wet season) | Mosquitoes at their peak, cockroaches and ants pushed indoors by rain | Empty boat covers, buckets and planters every week. |
| June to November (hurricane season) | Rats and wildlife displaced by storms, mosquitoes after flooding, debris that hides pests | Clear storm debris quickly and check the attic and crawl spaces after each storm. |
| Winter (high season) | Bed bugs and roaches in busy rentals, rats moving into homes that were closed | Inspect rentals between guests and schedule service before owners return. |
How Our Key Largo Pest Control Service Works
- Free inspectionA Toro technician walks the house, yard and waterfront, identifies the pests and finds where they are coming from.
- A plan built for island livingWe explain what we found and suggest a one-time treatment or ongoing protection that fits a full-time, seasonal or rental home.
- TreatmentWe target the places pests nest, feed and get in, choosing products and methods for your property and applying them according to their label directions.
- Follow-up and guaranteeWith our 110% Satisfaction Guarantee, if the bugs come back, so will Toro, at no additional cost to you.
Why Key Largo Chooses Toro Pest Management
- Serving South Florida since 1969. Dr. Jose Perez Linares founded Toro, and his family’s third generation leads it today.
- Straight down the Overseas Highway. Our headquarters is in Miami, and Key Largo is the first stop in the Keys.
- Response within 24 hours, guaranteed.
- Built for homes on the water, from canal houses and docks to resorts and rentals.
- Hablamos Español. Talk to us in English or Spanish.
Free inspection and $25 off your first service in Key Largo.
Schedule Your Free InspectionKey Largo Pest Control FAQ
Is Key Largo a city? Who do you serve there?
Key Largo is not an incorporated city. It is an unincorporated community and census-designated place in Monroe County, governed by the county, with about 12,400 residents in the 2020 census. The island also holds North Key Largo and Tavernier. We serve homes and businesses with Key Largo addresses in ZIP code 33037, and we guarantee a response within 24 hours.
Which termites are most common in Key Largo?
UF/IFAS Monroe County Extension names two termites as the economically damaging ones in the Keys: the West Indian drywood termite, which lives only inside buildings and wooden items, and the Asian subterranean termite. Formosan and eastern subterranean termites are very rare in the Keys. Because the two main species need different treatments, we identify the termite before recommending anything.
Can a boat bring termites to my dock and house?
It can. A 2025 University of Florida study found that recreational boats are a major way invasive termites spread, and that infested boats can release winged termites that start new colonies on land. If you keep a boat at your Key Largo dock, include it when you think about termite inspections.
My house sits empty for months. How do I keep pests out while I am away?
Many Key Largo homes are seasonal; in the 2020 census, about 38 percent of housing units in the community were vacant, a figure that includes second homes. Empty houses give roof rats, cockroaches and termites time to settle in unnoticed. A regular service plan, sealed rooflines and a check before you arrive are the simplest way to avoid surprises.
Who sprays for mosquitoes in Key Largo, and what can I do at home?
Area-wide mosquito control in the Keys is handled by the Florida Keys Mosquito Control District, which takes service requests from residents. Around your own home, the most important step is emptying anything that holds water, such as buckets, boat covers, planters and uncovered trash cans, every week. We can also treat the yard where mosquitoes rest.
Do I pay for the inspection, and can I speak with someone in Spanish?
The first inspection is free, new customers save $25 on their first service, and our team speaks Spanish. Call 305-594-4767 or fill out the Free Inspection form on this page.
Pest Control Near Key Largo
Toro also serves the communities around Key Largo:
Last updated: October 29, 2026
110% Satisfaction Guaranteed
If the bugs come back, so will TORO at no additional cost to you. TORO will respond with in 24 hours Guaranteed. Our technician will arrive quickly and deal with the pest problem to prevent recurrence.
