59/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.7★ from 185 Google reviews, listed on Google as “Pest control service”.
Best Pest Control Companies in Northfield, NH (2026)
6 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Northfield: Critter Control of New Hampshire, CR Score 59/100; 4.7★ from 185 Google reviews.
- 3
Best for emergencies (open 24/7): Sullivan Pest Control, posts 24/7 hours; ranked #3 of 6.
- 2
Most-reviewed: Bio Tech Pest Control, Inc., 219 Google reviews at 5.0★, the most of 6 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
6 Northfield pest control companies are ranked here by CR Score, from ten published factors. 1 is open 24/7, 4 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.8★ across 6 rated businesses.
Top 6 pest control companies in Northfield at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Critter Control of New Hampshire | 59 | 4.7★ (185) | Manchester, 10 mi away | — | Overall |
| 2 | Bio Tech Pest Control, Inc. | 58 | 5.0★ (219) | Manchester, 23 mi away | — | Most reviews |
| 3 | Sullivan Pest Control | 57 | 4.6★ (39) | Worcester, 23 mi away | 24/7 | Emergencies |
| 4 | Milltown Pest Control LLC | 56 | 5.0★ (51) | Manchester, 24 mi away | Sat | — |
| 5 | KM's Wildlife Removal | 54 | 4.9★ (14) | Manchester, 23 mi away | Sat · Sun | — |
| 6 | Mosquito Busters | 52 | 4.2★ (5) | Haverhill, 14 mi away | Sat | — |
The 6 best pest control companies in Northfield, 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.
Based in Manchester, 23 mi away
58/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 219 Google reviews, the most in Northfield.
Based in Worcester, 23 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 39 Google reviews, listed on Google as “Pest control service”.
Based in Manchester, 24 mi away
56/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 51 Google reviews, listed on Google as “Pest control service”.
Based in Manchester, 23 mi away
54/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 14 Google reviews, listed on Google as “Pest control service”.
Based in Haverhill, 14 mi away
52/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Pest control service”.
How we ranked Northfield pest control companies
We scored 6 Northfield 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 October 31, 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 Northfield 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 Northfield: frequently asked questions
Who is the best pest control company in Northfield?
By CR Score, the highest-ranked pest control company in Northfield, NH is Critter Control of New Hampshire with a CR Score of 59/100. It has 4.7★ from 185 Google reviews. Bio Tech Pest Control, Inc. (#2) and Sullivan Pest Control (#3) follow. We ranked 6 pest control companies on ten factors, last updated October 31, 2026.
How many pest control companies are there in Northfield?
ContractorsRanked ranks 6 pest control companies serving Northfield, NH. Counts are as of October 2026.
Which pest control companies in Northfield are open 24/7?
1 ranked pest control company in Northfield posts 24/7 hours. The highest-ranked is Sullivan Pest Control (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which pest control companies in Northfield work on weekends?
4 of 6 ranked pest control companies post Saturday hours and 2 post Sunday hours. The highest-ranked open Saturdays are Sullivan Pest Control (#3), Milltown Pest Control LLC (#4) and KM's Wildlife Removal (#5). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Northfield pest control companies have?
The median Google rating among 6 rated pest control companies in Northfield is 4.8★, with a median of 45 reviews. Bio Tech Pest Control, Inc. has the most, 219 reviews, and ranks #2. 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 Northfield count in this ranking?
Yes, if they are within 25 mi of the Northfield 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 Northfield
- October 2026: CR Scores recalculated for 6 pest control companies serving Northfield.
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