64/100CR 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 Saint Charles, MO (2026)
134 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Saint Charles: Orkin, CR Score 64/100; 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 134.
- 5
Most-reviewed: Aptive Pest Control, 6,236 Google reviews at 4.6★, the most of 134 ranked; ranked #5.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
134 Saint Charles pest control companies are ranked here by CR Score, from ten published factors. 23 are open 24/7, 85 open Saturdays and 41 open Sundays, based on posted hours. The median Google rating is 4.9★ across 134 rated businesses.
Top 10 pest control companies in Saint Charles at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Orkin | 64 | 4.8★ (4,133) | Weldon Spring, 11 mi away | 24/7 | Overall |
| 2 | Rottler Pest Solutions | 64 | 4.9★ (1,656) | St. Louis, 9 mi away | 24/7 | Emergencies |
| 3 | Rottler Pest Solutions | 63 | 4.9★ (1,148) | Chesterfield, 11 mi away | 24/7 | — |
| 4 | Bug Out | 62 | 4.8★ (2,015) | St. Louis, 17 mi away | 24/7 | — |
| 5 | Aptive Pest Control | 62 | 4.6★ (6,236) | St. Louis, 6 mi away | Sat · Evenings | Most reviews |
| 6 | Rottler Pest Solutions | 61 | 4.9★ (1,742) | St. Louis, 19 mi away | 24/7 | — |
| 7 | Moxie Pest Control | 61 | 4.6★ (3,165) | Bridgeton, 3 mi away | Sat | — |
| 8 | Spring Green | 61 | 4.9★ (570) | Saint Charles | Sat | — |
| 9 | STL Pest Control | 61 | 4.9★ (1,852) | St. Louis, 16 mi away | Sat · Sun · Evenings | — |
| 10 | EcoShield Pest Solutions | 61 | 4.7★ (1,936) | Maryland Heights, 6 mi away | Sat · Evenings | — |
The 134 best pest control companies in Saint Charles, 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 St. Louis, 9 mi away
64/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 1,656 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”.
#4 Bug Out
Based in St. Louis, 17 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.8★ from 2,015 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 6 mi away
62/100CR ScoreRanked #5 because of its Google rating and review volume: 4.6★ from 6,236 Google reviews, the most in Saint Charles.
Based in St. Louis, 19 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 1,742 Google reviews, listed on Google as “Pest control service”.
Based in Bridgeton, 3 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.6★ from 3,165 Google reviews, listed on Google as “Pest control service”.
#8 Spring Green
Based in Saint Charles
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 570 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 16 mi away
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 1,852 Google reviews, listed on Google as “Pest control service”.
Based in Maryland Heights, 6 mi away
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 1,936 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 9 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.6★ from 511 Google reviews, listed on Google as “Pest control service”.
Based in Wentzville, 22 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 1,199 Google reviews, listed on Google as “Pest control service”.
Based in O'Fallon, 9 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 1,364 Google reviews, listed on Google as “Pest control service”.
#14 Orkin
Based in St. Louis, 17 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.6★ from 1,835 Google reviews, listed on Google as “Pest control service”.
#15 STL Pest Control
Based in St. Louis, 17 mi away
60/100CR 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 Saint Peters, 4 mi away
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.8★ from 578 Google reviews, listed on Google as “Pest control service”.
Based in Saint Charles
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 419 Google reviews, listed on Google as “Pest control service”.
Based in Saint Charles
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.9★ from 684 Google reviews, listed on Google as “Pest control service”.
Based in Lake Saint Louis, 17 mi away
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 369 Google reviews, listed on Google as “Pest control service”.
Based in Ferguson, 10 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 580 Google reviews, listed on Google as “Pest control service”.
#21 Pure Pest
Based in O'Fallon, 10 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 75 Google reviews, listed on Google as “Pest control service”.
Based in Olivette, 10 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.4★ from 3,435 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 18 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 2,085 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 2 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 303 Google reviews, listed on Google as “Pest control service”.
Based in St. Louis, 22 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 630 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 134 ranked pest control companies here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Aptive Pest Control | 58 | 4.9★ (352) | 10 mi |
| 27 | OMNI Pest Solutions | 58 | 5.0★ (302) | 12 mi |
| 28 | Arch Mole Trapping | 58 | 5.0★ (51) | In Saint Charles |
| 29 | AJS Wildlife Solutions | 58 | 4.8★ (111) | 9 mi |
| 30 | Spring Green | 58 | 4.7★ (541) | 9 mi |
| 31 | Mosquito Squad of Greater Saint Louis | 58 | 4.8★ (79) | 14 mi |
| 32 | Salvo's Pest & Termite Control, Inc | 58 | 5.0★ (235) | 11 mi |
| 33 | Feature Pest & Termite | 57 | 4.7★ (1,007) | 8 mi |
| 34 | Heartland Pest and Termite Control | 57 | 5.0★ (45) | 15 mi |
| 35 | Gateway Thermal Solutions, LLC | 57 | 5.0★ (10) | In Saint Charles |
| 36 | Urban Crawl Pest Solutions | 56 | 5.0★ (15) | 11 mi |
| 37 | Buckingham Pest Control | 56 | 5.0★ (937) | 4 mi |
| 38 | Pest Shield | 56 | 4.9★ (62) | In Saint Charles |
| 39 | VEREK | 56 | 5.0★ (20) | In Saint Charles |
| 40 | Eagle Pass Pest Control Pros | 55 | 5.0★ (4) | In Saint Charles |
| 41 | Evo Pest Control | 55 | 4.8★ (170) | 15 mi |
| 42 | Lime Pest Control | 55 | 4.9★ (78) | 12 mi |
| 43 | The Xterminator LLC | 55 | 5.0★ (121) | 9 mi |
| 44 | STL Exterminating | 55 | 4.9★ (50) | 16 mi |
| 45 | All Solutions Pest Control | 55 | 5.0★ (197) | 14 mi |
| 46 | Unitech Pest And Termite | 55 | 4.7★ (114) | 5 mi |
| 47 | Terminix | 55 | 4.2★ (29) | In Saint Charles |
| 48 | AlphaGuard Pest Solutions | 55 | 5.0★ (45) | 12 mi |
| 49 | Bug Out | 55 | 5.0★ (185) | 10 mi |
| 50 | A1 St Louis Bed Bug Exterminator | 55 | 4.9★ (27) | 14 mi |
Also serving Saint Charles
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.
How we ranked Saint Charles pest control companies
We scored 134 Saint Charles 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 Saint Charles 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 Saint Charles: frequently asked questions
Who is the best pest control company in Saint Charles?
By CR Score, the highest-ranked pest control company in Saint Charles, MO is Orkin with a CR Score of 64/100. 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 134 pest control companies on ten factors, last updated November 3, 2026.
How many pest control companies are there in Saint Charles?
ContractorsRanked ranks 134 pest control companies serving Saint Charles, MO. 9 of them are based in Saint Charles; 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 Saint Charles are open 24/7?
23 ranked pest control companies in Saint Charles 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 Saint Charles work on weekends?
85 of 134 ranked pest control companies post Saturday hours and 41 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 Saint Charles pest control companies have?
The median Google rating among 134 rated pest control companies in Saint Charles is 4.9★, with a median of 45 reviews. Aptive Pest Control has the most, 6,236 reviews, and ranks #5. 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 Saint Charles count in this ranking?
Yes, if they are within 25 mi of the Saint Charles 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 Saint Charles
- November 2026: CR Scores recalculated for 134 pest control companies serving Saint Charles.
More pest control companies and Saint Charles pages
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