63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 1,028 Google reviews, listed on Google as “Pest control service”.
Best Pest Control Companies in Chelmsford, MA (2026)
159 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Chelmsford: Insight Pest Solutions, CR Score 63/100; 4.9★ from 1,028 Google reviews; open 7 days a week.
- 2
Best for emergencies (open 24/7): Terminix, posts 24/7 hours; ranked #2 of 159.
- 16
Most-reviewed: Rove Pest Control, 1,440 Google reviews at 4.9★, the most of 159 ranked; ranked #16.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
159 Chelmsford pest control companies are ranked here by CR Score, from ten published factors. 40 are open 24/7, 114 open Saturdays and 67 open Sundays, based on posted hours. The median Google rating is 4.9★ across 159 rated businesses.
Top 10 pest control companies in Chelmsford at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Insight Pest Solutions | 63 | 4.9★ (1,028) | Nashua, 9 mi away | Sat · Sun · Evenings | Overall |
| 2 | Terminix | 61 | 4.6★ (1,110) | Woburn, 14 mi away | 24/7 | Emergencies |
| 3 | Best Known Pest & Wildlife | 61 | 5.0★ (448) | Lowell, 6 mi away | Sat · Evenings | — |
| 4 | Mosquito Squad of Southern New Hampshire | 61 | 4.9★ (1,369) | Merrimack, 17 mi away | Sat · Sun · Evenings | — |
| 5 | Greenix Pest Control | 61 | 4.8★ (226) | Lowell, 4 mi away | Sat · Sun · Evenings | — |
| 6 | Andover Pest Control Inc. | 61 | 4.8★ (338) | North Andover, 14 mi away | 24/7 | — |
| 7 | Mosquito Mike | 61 | 4.9★ (96) | Lowell, 2 mi away | Sat · Sun · Evenings | — |
| 8 | Critter Control of Greater Boston | 60 | 4.9★ (334) | Waltham, 17 mi away | 24/7 | — |
| 9 | Mosquito 180 North Andover – Mosquito & Tick Control | 60 | 5.0★ (126) | North Andover, 15 mi away | 24/7 | — |
| 10 | Mosquito Joe of Bedford-Amherst NH | 60 | 5.0★ (209) | Nashua, 18 mi away | 24/7 | — |
The 159 best pest control companies in Chelmsford, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
#2 Terminix
Based in Woburn, 14 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.6★ from 1,110 Google reviews, listed on Google as “Pest control service”.
Based in Lowell, 6 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 448 Google reviews, listed on Google as “Pest control service”.
Based in Merrimack, 17 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 1,369 Google reviews, listed on Google as “Pest control service”.
Based in Lowell, 4 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 226 Google reviews, listed on Google as “Pest control service”.
Based in North Andover, 14 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 338 Google reviews, listed on Google as “Pest control service”.
Based in Lowell, 2 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 96 Google reviews, listed on Google as “Pest control service”.
Based in Waltham, 17 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 334 Google reviews, listed on Google as “Pest control service”.
Based in North Andover, 15 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 126 Google reviews, listed on Google as “Pest control service”.
Based in Nashua, 18 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 209 Google reviews, listed on Google as “Pest control service”.
Based in Fitchburg, 23 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 1,056 Google reviews, listed on Google as “Pest control service”.
#12 F&W Pest Control
Based in Framingham, 19 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.7★ from 550 Google reviews, listed on Google as “Pest control service”.
Based in Lowell, 4 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.8★ from 93 Google reviews, listed on Google as “Pest control service”.
#14 Terminix
Based in Andover, 12 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 94 Google reviews, listed on Google as “Pest control service”.
Based in Haverhill, 23 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 1,186 Google reviews, listed on Google as “Pest control service”.
Based in Southborough, 24 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 1,440 Google reviews, listed on Google as “Pest control service”.
Based in Chelmsford
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 322 Google reviews, listed on Google as “Pest control service”.
Based in Manchester, 24 mi away
59/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 1,335 Google reviews, listed on Google as “Pest control service”.
#19 Pest Busters
Based in Lowell, 8 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 30 Google reviews, listed on Google as “Pest control service”.
Based in Woburn, 12 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 769 Google reviews, listed on Google as “Pest control service”.
Based in Tewksbury, 9 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.7★ from 434 Google reviews, listed on Google as “Pest control service”.
Based in Salem, 14 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 399 Google reviews, listed on Google as “Pest control service”.
Based in Salem, 16 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 165 Google reviews, listed on Google as “Pest control service”.
Based in Lowell, 4 mi away
58/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Pest control service”.
Based in Ashland, 25 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 839 Google reviews, listed on Google as “Pest control service”.
Pest control companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 159 ranked pest control companies here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Pro Pest Control Service | 58 | 5.0★ (83) | 6 mi |
| 27 | Bug Man | 58 | 5.0★ (11) | 4 mi |
| 28 | Catseye Pest Control | 58 | 4.8★ (195) | 9 mi |
| 29 | Vault Pest Control | 58 | 5.0★ (40) | 15 mi |
| 30 | Anchor Pest Services | 58 | 4.9★ (1,392) | 23 mi |
| 31 | Appalachian Animal Control | 57 | 5.0★ (20) | 12 mi |
| 32 | The Lowell Pest Control Guys | 57 | 5.0★ (5) | 3 mi |
| 33 | Yankee Pest Control | 57 | 4.8★ (721) | 20 mi |
| 34 | Pest-End | 57 | 4.7★ (304) | 13 mi |
| 35 | The Bee Hunter | 57 | 5.0★ (123) | 20 mi |
| 36 | Eliminate 'Em Pest Control Services | 57 | 4.8★ (145) | 24 mi |
| 37 | Home Guardian Pest Control | 57 | 5.0★ (6) | 6 mi |
| 38 | Mantis Pest Control LLC | 57 | 4.8★ (55) | 6 mi |
| 39 | Mosquito Joe of Haverhill | 57 | 5.0★ (13) | 11 mi |
| 40 | B & B Pest Control | 57 | 4.7★ (417) | 23 mi |
| 41 | Freedom Pest Control | 57 | 5.0★ (447) | 23 mi |
| 42 | proof. Pest Control | 56 | 4.8★ (1,387) | 21 mi |
| 43 | Boston Best Pest Control | 56 | 4.8★ (55) | 21 mi |
| 44 | GreenHow, Inc | 56 | 4.9★ (208) | 18 mi |
| 45 | A1 Exterminators | 56 | 4.8★ (193) | 15 mi |
| 46 | MD Weaver The Pest Reliever | 56 | 4.7★ (70) | 22 mi |
| 47 | Mosquito Squad of Newton | 56 | 4.9★ (30) | 19 mi |
| 48 | Catseye Pest Control - Boston, MA | 56 | 4.7★ (784) | 23 mi |
| 49 | Ultra Safe Pest Management | 56 | 4.5★ (156) | 23 mi |
| 50 | Rutland Turfcare & Pest Control | 56 | 4.8★ (468) | 22 mi |
Also serving Chelmsford
20 more pest control companies within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Absolute Pest Management,Inc. | 5.0★ (2) | 21 mi |
| All Star Pest Control | 5.0★ (2) | 21 mi |
| Backyard Patrol Llc | 5.0★ (1) | 22 mi |
| Boston Pest Control Services | 5.0★ (2) | 24 mi |
| Boz Pest Control | 5.0★ (2) | 24 mi |
| Dragonfly Tree & Shrub Care | 5.0★ (2) | 24 mi |
| Eco Friendly Pest Management in Cambridge.. | 5.0★ (2) | 21 mi |
| Eco Friendly Pest Management in Nashua | 5.0★ (1) | 12 mi |
| Essex Pest Control | 5.0★ (2) | 21 mi |
| Expert Pest Control | 4.5★ (2) | 20 mi |
| Greater NH Pest | 5.0★ (1) | 15 mi |
| Hustlers Pest Control | 5.0★ (2) | 4 mi |
| Local Pest Control Services in Lynn | 5.0★ (1) | 23 mi |
| Minuteman Landscaping Inc. | 5.0★ (1) | 11 mi |
| Organic Exterminator in Lowell | 5.0★ (2) | 4 mi |
| Organic Exterminator in Newton | 5.0★ (1) | 21 mi |
| PestGuard | 5.0★ (2) | 23 mi |
| Secured Environments LLC | 1.0★ (2) | 18 mi |
| Sniff K9s | 5.0★ (1) | 23 mi |
| Ultra Safe Pest Management | 4.5★ (2) | 22 mi |
How we ranked Chelmsford pest control companies
We scored 159 Chelmsford pest control companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 2, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Chelmsford data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Pest control companies in Chelmsford: frequently asked questions
Who is the best pest control company in Chelmsford?
By CR Score, the highest-ranked pest control company in Chelmsford, MA is Insight Pest Solutions with a CR Score of 63/100. It has 4.9★ from 1,028 Google reviews. It is open 7 days a week. Terminix (#2) and Best Known Pest & Wildlife (#3) follow. We ranked 159 pest control companies on ten factors, last updated November 2, 2026.
How many pest control companies are there in Chelmsford?
ContractorsRanked ranks 159 pest control companies serving Chelmsford, MA. 1 of them is based in Chelmsford; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of November 2026.
Which pest control companies in Chelmsford are open 24/7?
40 ranked pest control companies in Chelmsford post 24/7 hours. The highest-ranked are Terminix (#2), Andover Pest Control Inc. (#6) and Critter Control of Greater Boston (#8). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pest control companies in Chelmsford work on weekends?
114 of 159 ranked pest control companies post Saturday hours and 67 post Sunday hours. The highest-ranked open Saturdays are Insight Pest Solutions (#1), Terminix (#2) and Best Known Pest & Wildlife (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Chelmsford pest control companies have?
The median Google rating among 159 rated pest control companies in Chelmsford is 4.9★, with a median of 40 reviews. Rove Pest Control has the most, 1,440 reviews, and ranks #16. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank pest control companies?
Each pest control company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do pest control companies outside Chelmsford count in this ranking?
Yes, if they are within 25 mi of the Chelmsford city center, our service radius for pest control companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can pest control companies pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Chelmsford
- November 2026: CR Scores recalculated for 159 pest control companies serving Chelmsford.
- November 2026: 1 duplicate listing merged.
More pest control companies and Chelmsford pages
Pest control companies near Chelmsford
- Pest control companies in Lowell, MA158 ranked
- Pest control companies in Westford, MA143 ranked
- Pest control companies in Billerica, MA170 ranked
- Pest control companies in Dracut, MA145 ranked
- Pest control companies in Tyngsboro, MA114 ranked
- Pest control companies in Tewksbury, MA162 ranked
- Pest control companies in Acton, MA178 ranked
- Pest control companies in Bedford, MA180 ranked
- Pest control companies in Concord, MA180 ranked
- Pest control companies in Wilmington, MA168 ranked
Other trades in Chelmsford
- Roofers in Chelmsford1195 ranked
- Plumbers in Chelmsford814 ranked
- Electricians in Chelmsford683 ranked
- HVAC contractors in Chelmsford1157 ranked
- General contractors in Chelmsford1402 ranked
- Painters in Chelmsford328 ranked
- Landscapers in Chelmsford374 ranked
- Handymen in Chelmsford105 ranked
- Kitchen remodelers in Chelmsford782 ranked
- Bathroom remodelers in Chelmsford753 ranked
- Flooring contractors in Chelmsford474 ranked
- Tile installers in Chelmsford77 ranked
- Drywall contractors in Chelmsford34 ranked
- Concrete contractors in Chelmsford193 ranked
- Fence contractors in Chelmsford200 ranked
- Deck builders in Chelmsford424 ranked
- Siding contractors in Chelmsford624 ranked
- Window installers in Chelmsford471 ranked
- Gutter installers in Chelmsford282 ranked
- Insulation contractors in Chelmsford133 ranked
- Solar installers in Chelmsford154 ranked
- Garage door repair companies in Chelmsford173 ranked
- Foundation repair companies in Chelmsford209 ranked
- Tree services in Chelmsford411 ranked
- Masonry contractors in Chelmsford697 ranked
- Water damage restoration companies in Chelmsford498 ranked
- Home builders in Chelmsford565 ranked
- Demolition contractors in Chelmsford128 ranked
- Window cleaners in Chelmsford47 ranked
- Pressure washing companies in Chelmsford109 ranked
- Paving contractors in Chelmsford261 ranked
- Auto glass repair shops in Chelmsford121 ranked
- Septic service companies in Chelmsford105 ranked
- Excavating contractors in Chelmsford235 ranked
- Pool builders in Chelmsford207 ranked
- All contractors in Chelmsford