65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 4,133 Google reviews, listed on Google as “Pest control service”.
Best Pest Control Companies in O'Fallon, MO (2026)
111 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in O'Fallon: Orkin, CR Score 65/100; 4.8★ from 4,133 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Rottler Pest Solutions, posts 24/7 hours; ranked #2 of 111.
- 11
Most-reviewed: Aptive Pest Control, 6,236 Google reviews at 4.6★, the most of 111 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
111 O'Fallon pest control companies are ranked here by CR Score, from ten published factors. 18 are open 24/7, 68 open Saturdays and 30 open Sundays, based on posted hours. The median Google rating is 4.9★ across 111 rated businesses.
Top 10 pest control companies in O'Fallon at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Orkin | 65 | 4.8★ (4,133) | Weldon Spring, 6 mi away | 24/7 | Overall |
| 2 | Rottler Pest Solutions | 63 | 4.9★ (1,199) | Wentzville, 10 mi away | 24/7 | Emergencies |
| 3 | Rottler Pest Solutions | 63 | 4.9★ (1,148) | Chesterfield, 11 mi away | 24/7 | — |
| 4 | Amco Ranger Termite & Pest Solutions | 63 | 4.9★ (1,364) | O'Fallon | Sat | — |
| 5 | Mosquito Squad of West St. Louis County | 62 | 4.9★ (369) | Lake Saint Louis, 6 mi away | 24/7 | — |
| 6 | Pure Pest | 61 | 4.9★ (75) | O'Fallon | 24/7 | — |
| 7 | Rottler Pest Solutions | 61 | 4.9★ (1,656) | St. Louis, 21 mi away | 24/7 | — |
| 8 | Bug Out | 60 | 4.8★ (2,015) | St. Louis, 23 mi away | 24/7 | — |
| 9 | Salvo's Pest & Termite Control, Inc | 60 | 5.0★ (235) | O'Fallon | Sat | — |
| 10 | Spring Green | 60 | 4.7★ (541) | O'Fallon | Sat | — |
The 111 best pest control companies in O'Fallon, 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 Wentzville, 10 mi away
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 1,199 Google reviews, listed on Google as “Pest control service”.
Based in Chesterfield, 11 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 1,148 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon
63/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 1,364 Google reviews, listed on Google as “Pest control service”.
Based in Lake Saint Louis, 6 mi away
62/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “Pest control service”.
#6 Pure Pest
Based in O'Fallon
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 75 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 21 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 1,656 Google reviews, listed on Google as “Pest control service”.
#8 Bug Out
Based in St. Louis, 23 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 2,015 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 235 Google reviews, listed on Google as “Pest control service”.
#10 Spring Green
Based in O'Fallon
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 541 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 16 mi away
59/100CR ScoreRanked #11 because of its Google rating and review volume: 4.6★ from 6,236 Google reviews, the most in O'Fallon.
Based in O'Fallon
59/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Pest control service”.
#13 Orkin
Based in St. Louis, 23 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.6★ from 1,835 Google reviews, listed on Google as “Pest control service”.
Based in Saint Peters, 9 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 578 Google reviews, listed on Google as “Pest control service”.
#15 STL Pest Control
Based in St. Louis, 23 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 1,244 Google reviews, listed on Google as “Pest control service”.
Based in Bridgeton, 15 mi away
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.6★ from 3,165 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon
58/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 197 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 198 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Pest control service”.
Based in Saint Charles, 6 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 684 Google reviews, listed on Google as “Pest control service”.
Based in Troy, 16 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 93 Google reviews, listed on Google as “Pest control service”.
Based in Maryland Heights, 17 mi away
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.7★ from 1,936 Google reviews, listed on Google as “Pest control service”.
Based in Saint Charles, 8 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 419 Google reviews, listed on Google as “Pest control service”.
#24 Zero Pest
Based in O'Fallon
58/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 143 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.6★ from 10 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 111 ranked pest control companies here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Wildlife Getters | 58 | 5.0★ (35) | In O'Fallon |
| 27 | Rottler Pest Solutions | 58 | 4.6★ (511) | 21 mi |
| 28 | AlphaGuard Pest Solutions | 58 | 5.0★ (45) | In O'Fallon |
| 29 | Advanced Pest Specialists | 58 | 5.0★ (44) | In O'Fallon |
| 30 | Vogelsang Pest Management | 58 | 5.0★ (118) | In O'Fallon |
| 31 | The Xterminator LLC | 57 | 5.0★ (121) | In O'Fallon |
| 32 | Spring Green | 57 | 4.9★ (570) | 18 mi |
| 33 | Heartland Pest and Termite Control | 57 | 5.0★ (45) | 15 mi |
| 34 | Angela's Pest Control | 57 | 5.0★ (4) | In O'Fallon |
| 35 | Bug Out | 57 | 5.0★ (185) | 2 mi |
| 36 | Newt’s Pest Control | 57 | 5.0★ (303) | 10 mi |
| 37 | Wildlife Control Solutions, Inc. | 56 | 4.2★ (19) | In O'Fallon |
| 38 | Hawx Pest Control | 56 | 4.4★ (3,435) | 20 mi |
| 39 | Pointe Pest Control - Ferguson | 56 | 4.9★ (580) | 22 mi |
| 40 | Aptive Pest Control | 56 | 4.9★ (352) | 19 mi |
| 41 | Jacob's Pest Control | 56 | 5.0★ (17) | In O'Fallon |
| 42 | O'Fallon Pest Control | 56 | 4.2★ (10) | In O'Fallon |
| 43 | OMNI Pest Solutions | 55 | 5.0★ (302) | 23 mi |
| 44 | Eagle Pest Control | 55 | 5.0★ (15) | In O'Fallon |
| 45 | Ketchum Pest & Termite and Wildlife Solutions | 55 | 4.8★ (13) | In O'Fallon |
| 46 | Arch Pest Services | 55 | 5.0★ (12) | In O'Fallon |
| 47 | Mosquito Squad of Greater Saint Louis | 55 | 4.8★ (79) | 24 mi |
| 48 | Evo Pest Control | 55 | 4.8★ (170) | 17 mi |
| 49 | Arch Mole Trapping | 55 | 5.0★ (51) | 12 mi |
| 50 | Byrd's Bugs Pest Control | 55 | 5.0★ (28) | In O'Fallon |
Also serving O'Fallon
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 |
|---|---|---|
| Amco Ranger Termite and Pest Solutions | In O'Fallon | |
| Archwest Termite Control Co | 5.0★ (2) | 12 mi |
| Bay's Termite & Pest Control | 5.0★ (1) | 9 mi |
| Diamond Edge Outdoor Management | 18 mi | |
| Drysdale Termite & Pest | 5.0★ (2) | 8 mi |
| Eco Friendly Pest Control Services in O'Fallon | 5.0★ (2) | In O'Fallon |
| Eco Friendly Pest Control Services in St. Charles | 5.0★ (1) | 12 mi |
| Eddie Pest Control Solutions | 5.0★ (1) | 17 mi |
| Exquisite Pest Control | 21 mi | |
| Freedom Pest Control | 5.0★ (1) | In O'Fallon |
| Local Pest Control Services in St. Peters | 5.0★ (2) | 4 mi |
| Midwestern Termite & Pest | 3.0★ (2) | 10 mi |
| Pest Assassin | 20 mi | |
| Peters Pest Control Solutions | 5.0★ (2) | 8 mi |
| Pezz Pest Control Wentzville | 5.0★ (1) | In O'Fallon |
| Premier Pest Management, LLC | 6 mi | |
| Rays Pest Control | 10 mi | |
| STL Mole Hunt | 20 mi | |
| STL Pest Control | 4 mi | |
| Wildlife Pest Removal St Louis | 5.0★ (2) | 17 mi |
How we ranked O'Fallon pest control companies
We scored 111 O'Fallon 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 O'Fallon 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 O'Fallon: frequently asked questions
Who is the best pest control company in O'Fallon?
By CR Score, the highest-ranked pest control company in O'Fallon, MO is Orkin with a CR Score of 65/100. It has 4.8★ from 4,133 Google reviews. It is open 24/7. Rottler Pest Solutions (#2) and Rottler Pest Solutions (#3) follow. We ranked 111 pest control companies on ten factors, last updated November 3, 2026.
How many pest control companies are there in O'Fallon?
ContractorsRanked ranks 111 pest control companies serving O'Fallon, MO. 23 of them are based in O'Fallon; 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 O'Fallon are open 24/7?
18 ranked pest control companies in O'Fallon post 24/7 hours. The highest-ranked are Orkin (#1), Rottler Pest Solutions (#2) and Rottler Pest Solutions (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pest control companies in O'Fallon work on weekends?
68 of 111 ranked pest control companies post Saturday hours and 30 post Sunday hours. The highest-ranked open Saturdays are Orkin (#1), Rottler Pest Solutions (#2) and Rottler Pest Solutions (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do O'Fallon pest control companies have?
The median Google rating among 111 rated pest control companies in O'Fallon is 4.9★, with a median of 46 reviews. Aptive Pest Control has the most, 6,236 reviews, and ranks #11. 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 O'Fallon count in this ranking?
Yes, if they are within 25 mi of the O'Fallon 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 O'Fallon
- November 2026: CR Scores recalculated for 111 pest control companies serving O'Fallon.
More pest control companies and O'Fallon pages
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