66/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.7★ from 1,306 Google reviews, listed on Google as “Pest control service”.
Best Pest Control Companies in Frederick, MD (2026)
65 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Frederick: Ehrlich Pest Control, CR Score 66/100; 4.7★ from 1,306 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Terminix, posts 24/7 hours; ranked #2 of 65.
- 21
Most-reviewed: Senate Termite & Pest Control, 2,638 Google reviews at 4.6★, the most of 65 ranked; ranked #21.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
65 Frederick pest control companies are ranked here by CR Score, from ten published factors. 20 are open 24/7, 51 open Saturdays and 31 open Sundays, based on posted hours. The median Google rating is 4.8★ across 65 rated businesses.
Top 10 pest control companies in Frederick at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Ehrlich Pest Control | 66 | 4.7★ (1,306) | Frederick | 24/7 | Overall |
| 2 | Terminix | 65 | 4.7★ (956) | Frederick | 24/7 | Emergencies |
| 3 | American Pest | 63 | 4.8★ (327) | Frederick | Sat · Sun · Evenings | — |
| 4 | Petti Pest Control | 62 | 5.0★ (1,409) | Leesburg, 22 mi away | 24/7 | — |
| 5 | Key Pest Control | 61 | 4.9★ (97) | Frederick | Sat · Sun · Evenings | — |
| 6 | Pest Shield Inc. | 61 | 5.0★ (76) | Frederick | Sat · Sun | — |
| 7 | Green Pest Services | 61 | 4.9★ (978) | Leesburg, 23 mi away | 24/7 | — |
| 8 | Virginia Green Lawn Care | 61 | 4.9★ (609) | Frederick | — | — |
| 9 | Potomac Pest & Termite Control | 61 | 5.0★ (151) | Frederick | Sat | — |
| 10 | PestNow | 61 | 4.8★ (783) | Frederick | — | — |
The 65 best pest control companies in Frederick, 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 Frederick
65/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.7★ from 956 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.8★ from 327 Google reviews, listed on Google as “Pest control service”.
Based in Leesburg, 22 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 1,409 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 97 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 76 Google reviews, listed on Google as “Pest control service”.
Based in Leesburg, 23 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 978 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 609 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Pest control service”.
#10 PestNow
Based in Frederick
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.8★ from 783 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 70 Google reviews, listed on Google as “Pest control service”.
Based in Gaithersburg, 22 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 1,136 Google reviews, listed on Google as “Pest control service”.
#13 Orkin
Based in Gaithersburg, 22 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.6★ from 1,230 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 67 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 222 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Pest control service”.
Based in Frederick
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.5★ from 8 Google reviews, listed on Google as “Pest control service”.
#18 Terminix
Based in Gaithersburg, 22 mi away
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 148 Google reviews, listed on Google as “Pest control service”.
Based in Ashburn, 24 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 1,636 Google reviews, listed on Google as “Pest control service”.
#20 AAF Pest Control
Based in Frederick
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Pest control service”.
Based in Gaithersburg, 24 mi away
57/100CR ScoreRanked #21 because of its Google rating and review volume: 4.6★ from 2,638 Google reviews, the most in Frederick.
Based in Walkersville, 6 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Pest control service”.
Based in Ashburn, 24 mi away
56/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 64 Google reviews, listed on Google as “Pest control service”.
Based in Germantown, 19 mi away
56/100CR ScoreRanked #24 because of its Google rating and review volume: 4.9★ from 2,014 Google reviews.
Based in Frederick
56/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 3 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 65 ranked pest control companies here; the rest are on their profiles.
Also serving Frederick
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 |
|---|---|---|
| Arvelon Pest Specialists | In Frederick | |
| Brevantis Pest Specialists | In Frederick | |
| Caldraven Pest Control Experts | In Frederick | |
| Capitol Mosquito of Montgomery County | 5.0★ (2) | 24 mi |
| Dovren Pest Extermination Services | In Frederick | |
| Eco Friendly Pest Management in Frederick | 5.0★ (2) | In Frederick |
| Home Guard Termite, Pest, and Home Services | 5.0★ (1) | In Frederick |
| Leader Frederick Pest Control | 5.0★ (2) | In Frederick |
| Local Pest Control Services in Gaithersburg | 5.0★ (2) | 22 mi |
| Lumetra Pest Control Service | In Frederick | |
| Mosquito Hero | 21 mi | |
| Mosquito Ranger | In Frederick | |
| NaturaLawn of America - Sales Office | 1.0★ (1) | In Frederick |
| Rapid Frederick Pest Control | 5.0★ (2) | In Frederick |
| Reliable Clarksburg Pest Control | 5.0★ (1) | 15 mi |
| Roche Landscaping Services | In Frederick | |
| Shield Control Exterminators of Frederick | In Frederick | |
| The Mice Guys | 22 mi | |
| Weston Pest Service LLC | In Frederick | |
| Zorvanel Pest Control Services | In Frederick |
How we ranked Frederick pest control companies
We scored 65 Frederick 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 3, 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 Frederick 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 Frederick: frequently asked questions
Who is the best pest control company in Frederick?
By CR Score, the highest-ranked pest control company in Frederick, MD is Ehrlich Pest Control with a CR Score of 66/100. It has 4.7★ from 1,306 Google reviews. It is open 24/7. Terminix (#2) and American Pest (#3) follow. We ranked 65 pest control companies on ten factors, last updated November 3, 2026.
How many pest control companies are there in Frederick?
ContractorsRanked ranks 65 pest control companies serving Frederick, MD. 23 of them are based in Frederick; 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 Frederick are open 24/7?
20 ranked pest control companies in Frederick post 24/7 hours. The highest-ranked are Ehrlich Pest Control (#1), Terminix (#2) and Petti Pest Control (#4). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pest control companies in Frederick work on weekends?
51 of 65 ranked pest control companies post Saturday hours and 31 post Sunday hours. The highest-ranked open Saturdays are Ehrlich Pest Control (#1), Terminix (#2) and American Pest (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Frederick pest control companies have?
The median Google rating among 65 rated pest control companies in Frederick is 4.8★, with a median of 65 reviews. Senate Termite & Pest Control has the most, 2,638 reviews, and ranks #21. 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 Frederick count in this ranking?
Yes, if they are within 25 mi of the Frederick 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 Frederick
- November 2026: CR Scores recalculated for 65 pest control companies serving Frederick.
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