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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

25 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!

7 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

Carpet beetles do not bite humans, but their larvae can cause skin irritation that’s often mistaken for bites. These tiny, bristly larvae have barbed hairs that can lead to allergic reactions in sensitive individuals, resulting in red, itchy welts or rashes. While the irritation may resemble bug bites, it’s actually a response to contact with the hairs or shed skins, not an actual bite. Adult carpet beetles are harmless and primarily feed on pollen, but their larvae can damage natural fibers like wool, fur, or leather in carpets, clothing, and upholstery.

Carpenter ants don’t eat wood. It’s a common misconception because many kinds of termites eat wood as well as live inside it. Carpenter ants, however, are omnivores and only chew into wood to create pathways and nests, discarding the chewed wood as frass which is a major indicator of a carpenter ant problem. They prefer to eat smaller insects, sweet things like spilled honey, and sources of protein like pet food.

Both spikes and loose nets can be installed over nest sites to prevent the bird from returning, but nets are not a humane option since birds and other wildlife can get tangled in them. 

Spikes are a humane alternative that deter nesting without harming the birds. In small areas, like vents, a very fine mesh net can be installed to prevent the bird from returning. These nets don't generally pose a risk to the birds.

The cost of removing a hornets nest ranges from $300 to $400, depending on the size and location of the active nest. Bald-faced hornet removal costs more than the average—about $625 to $750. The price tag also depends on the eradication method, ranging from aerosol sprays and dusting to vacuuming and extermination.

Armadillos have very strong smelling capabilities to track down insects efficiently. But this superpower is actually a double-edged sword because their extreme sense of smell also causes them to be more sensitive and deterred by strong odors. To keep them at bay, you can place small amounts of substances like vinegar, ammonia, and mothballs around your property and near armadillo hotspots.

Although you can technically flood an armadillo out of its hole, it’s important to remember that this can be potentially fatal to the animal. Armadillos sleep between 16 and 18 hours a day, and if you perform this technique while they’re deep in sleep, they may not awake soon enough to save themselves.

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.