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Top-Rated Pest control specialists in Andover - Updated Nov 2026

Avatar for Colonial Pest Control Inc
Colonial Pest Control Inc
4.8(
263
)
Pest Control - Bugs and InsectsPest Control - RodentsPest Control - Termite

Serving Andover, NH and surrounding areas

Approved (Corporate)

In business since 1984

Free estimates

Emergency services offered

"Dave was excellent. He was professional, honest and thorough. I thought I may have squirrels in the house because I heard scratching above a ceiling and saw a squirrel climbing my chimney with acorns in it's mouth.  
Dave inspected all the outside areas of my house and looked in my attic. He found no evidence of squirrels or bats or anything else (other than a few mice that I can take care of).
He screened off my two gable vents and recommended securing a couple of other entry prone areas which I can do.
I highly recommend Colonial Pest Control.
"
Project Photos
Tech introduction
Tech spray ext
Tech kitchen
Tech ladder

+5

24 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Ehrlich Pest Control
Ehrlich Pest Control
4.3(
11
)
Mosquito ControlPest Control - Bed BugsPest Control - Bugs and Insects+2 more

Serving Andover, NH and surrounding areas

Approved

In business since 1921

Free estimates

Credit card accepted

"I had a fantastic experience with Ehrlich Southeast. Their customer service was excellent, from scheduling the appointment to the completion of the service. Their technicians were friendly, knowledgeable, and efficient, and they ensured my property was pest-free. I highly recommend them to anyone in need of pest control services."
Recommended by100%of homeowners
Avatar for A1 Exterminators, Part of the Ned's Home Family
A1 Exterminators, Part of the Ned's Home Family
4.0(
3,189
)
Pest Control - Bugs and InsectsPest Control - RodentsPest Control - Small Animals+2 more

Serving Andover, NH and surrounding areas

Approved

In business since 1965

Free estimates

Credit card accepted

Since 1953, A1 Exterminators has provided quality pest control and extermination services throughout Massachusetts, Cape Cod, Martha's Vineyard, Rhode Island, Southern New Hampshire and Maine.\nWe're excited to announce that A1 Exterminators, a trusted name in pest control, is now proudly part of Ned's Home! With a legacy of protecting homes and businesses across Massachusetts, New Hampshire, Rhode Island and Maine for over 70-years, this transition ensures that A1 customers will continue receiving the same expert residential and commercial pest control and extermination services, now with the added strength and resources of Ned?s Home, a leader in home maintenance solutions.\n\nChoose A1 Exterminators for all your pest control and extermination needs and experience the difference our quality service can make!

6 neighbors recently requested a quote
Recommended by88%of homeowners
Sully's Pest Services, LLC
5.0(
2
)
Mosquito ControlPest Control - Bed BugsPest Control - Bugs and Insects+3 more

Serving Andover, NH and surrounding areas

In business since 2022

Free estimates

Credit card accepted

"Shawn came out to my house within 24 hours, quickly assessed the wasp infestation in my backyard shed, and treated them on the spot. He returned six days later to check on everything and remove the empty nest, which my family and I greatly appreciated. Shawn’s communications with me via text, phone and email were outstanding throughout the process. I highly recommend Sully’s!"
Response time1 day
Terminix
3.4(
35
)
Pest Control - Bed BugsPest Control - Bugs and InsectsPest Control - Termite

Serving Andover, NH and surrounding areas

In business since 1927

"The person who came to the house was very nice and professional, but they are obviously very poorly trained because he told us that we had "march flies" and our second and third opinions told us that they looked nothing like a march fly. First, they told us they were termites, then march flies. They are neither."
Recommended by45%of homeowners
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Pest Control FAQs, answered by experts

There are DIY methods and store-bought pesticides available for the public to use. However, these pesticides also come with a risk, and you need to follow the directions correctly and take precautionary measures to prevent exposure to these chemicals. These methods may be an option for small pest problems, but you should call in a pest control specialist for persistent pests and infestations.

Rats are nocturnal creatures, meaning they are most active at night, typically from late evening through the early morning. They use the cover of darkness to explore, forage for food, and find water, as they feel safer and can avoid daytime predators and human activity. Their sharp senses, including keen night vision and hearing, are well-suited for navigating in the dark. Because they prefer to stay hidden during the day in secluded areas like walls or attics, you are more likely to spot signs of their presence—such as droppings or gnaw marks—before you see an actual rat.

Like any other animal, rats are attracted to food sources, water, and shelter. Clean up food messes right away, don’t leave pet food out, and secure your garbage to make your home less appealing. Fix leaky pipes and dripping faucets, and declutter spaces that rats might think to nest in.

Termites are generally more destructive than carpenter ants, which is why it’s important to get rid of termites as quickly as possible. Termites will swarm your home to relentlessly feast on its wood frame, sheetrock, insulation, and carpet down to the studs.

While carpenter ants work surprisingly efficiently, they can still take years to damage your home significantly. It can also take termites several years to fully compromise a home's structure. However, the right colony can take down a full house in about a year. Overall, termites are far more diligent when it comes to destroying structures.

DIY removal risks harming bees and you. Professionals offer safe and effective solutions protecting both parties.

The Andover, NH homeowners’ guide to pest control services

From average costs to expert advice, get all the answers you need to get your job done.