65/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.9★ from 681 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Best Pest Control Companies in Irmo, SC (2026)
78 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Irmo: Mosquito Squad of Columbia, CR Score 65/100; 4.9★ from 681 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Orkin, posts 24/7 hours; ranked #3 of 78.
- 2
Most-reviewed: ClearDefense Pest Control, 4,181 Google reviews at 5.0★, the most of 78 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
78 Irmo pest control companies are ranked here by CR Score, from ten published factors. 15 are open 24/7, 38 open Saturdays and 21 open Sundays, based on posted hours. The median Google rating is 4.8★ across 78 rated businesses.
Most of this list also appears on the Pest control companies in West Columbia ranking. See Pest control companies in West Columbia
Top 10 pest control companies in Irmo at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mosquito Squad of Columbia | 65 | 4.9★ (681) | Columbia, 2 mi away | 24/7 | Overall |
| 2 | ClearDefense Pest Control | 63 | 5.0★ (4,181) | Columbia, 10 mi away | Sat · Evenings | Most reviews |
| 3 | Orkin | 63 | 4.6★ (2,081) | West Columbia, 10 mi away | 24/7 | Emergencies |
| 4 | Rocket Pest Control | 62 | 4.9★ (3,831) | Cayce, 11 mi away | Sat | — |
| 5 | Aruza Pest Control | 61 | 4.9★ (1,355) | West Columbia, 8 mi away | Sat | — |
| 6 | Proforce Pest Control - Columbia | 61 | 4.7★ (864) | Columbia, 14 mi away | 24/7 | — |
| 7 | Go-Forth Pest Control | 61 | 4.9★ (2,687) | Columbia, 15 mi away | Sat · Evenings | — |
| 8 | Croach Pest Control | 61 | 4.8★ (1,308) | West Columbia, 8 mi away | Sat | — |
| 9 | Alpha Wildlife Columbia | 60 | 4.9★ (347) | Columbia, 10 mi away | Sat · Sun | — |
| 10 | Jeffcoat Pest & Home | 60 | 4.9★ (872) | Columbia, 2 mi away | — | — |
The 78 best pest control companies in Irmo, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Based in Columbia, 10 mi away
63/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 4,181 Google reviews, the most in Irmo.
Based on 8 of 10 factors; credentials and recency not yet collected.
#3 Orkin
Based in West Columbia, 10 mi away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.6★ from 2,081 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cayce, 11 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 3,831 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Columbia, 8 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 1,355 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 14 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.7★ from 864 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 15 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 2,687 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in West Columbia, 8 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.8★ from 1,308 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 10 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.9★ from 347 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 2 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.9★ from 872 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lexington, 8 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 360 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 9 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 1,839 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 10 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 1 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.8★ from 130 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 14 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 72 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 11 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 154 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Lehi, 14 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 711 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 5 mi away
59/100CR ScoreRanked #18 because of its Google rating and review volume: 4.7★ from 418 Google reviews.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 10 mi away
58/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 151 Google reviews, listed on Google as “Pest control service”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Columbia, 11 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 159 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 3 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 212 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 10 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.8★ from 242 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Cayce, 11 mi away
57/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 784 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 14 mi away
57/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 183 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Columbia, 14 mi away
57/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.9★ from 789 Google reviews, listed on Google as “Pest control service”.
Based on 8 of 10 factors; credentials and recency not yet collected.
How we ranked Irmo pest control companies
We scored 78 Irmo 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 Irmo 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 Irmo: frequently asked questions
Who is the best pest control company in Irmo?
By CR Score, the highest-ranked pest control company in Irmo, SC is Mosquito Squad of Columbia with a CR Score of 65/100. It has 4.9★ from 681 Google reviews. It is open 24/7. ClearDefense Pest Control (#2) and Orkin (#3) follow. We ranked 78 pest control companies on ten factors, last updated November 3, 2026.
How many pest control companies are there in Irmo?
ContractorsRanked ranks 78 pest control companies serving Irmo, SC. Counts are as of November 2026.
Which pest control companies in Irmo are open 24/7?
15 ranked pest control companies in Irmo post 24/7 hours. The highest-ranked are Mosquito Squad of Columbia (#1), Orkin (#3) and Proforce Pest Control - Columbia (#6). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pest control companies in Irmo work on weekends?
38 of 78 ranked pest control companies post Saturday hours and 21 post Sunday hours. The highest-ranked open Saturdays are Mosquito Squad of Columbia (#1), ClearDefense Pest Control (#2) and Orkin (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Irmo pest control companies have?
The median Google rating among 78 rated pest control companies in Irmo is 4.8★, with a median of 126 reviews. ClearDefense Pest Control has the most, 4,181 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 Irmo count in this ranking?
Yes, if they are within 25 mi of the Irmo 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 Irmo
- November 2026: CR Scores recalculated for 78 pest control companies serving Irmo.
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