63/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 3,213 Google reviews, listed on Google as “Pest control service”.
Best Pest Control Companies in Walnut, CA (2026)
587 pest control companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Walnut: Orkin, CR Score 63/100; 4.8★ from 3,213 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): CURA Termite & Pest Control - West Covina, posts 24/7 hours; ranked #2 of 587.
- 15
Most-reviewed: Brooks Pest Control, 11,523 Google reviews at 4.6★, the most of 587 ranked; ranked #15.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
587 Walnut pest control companies are ranked here by CR Score, from ten published factors. 146 are open 24/7, 410 open Saturdays and 235 open Sundays, based on posted hours. The median Google rating is 4.9★ across 587 rated businesses.
Top 10 pest control companies in Walnut at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Orkin | 63 | 4.8★ (3,213) | Anaheim, 13 mi away | 24/7 | Overall |
| 2 | CURA Termite & Pest Control - West Covina | 62 | 5.0★ (252) | West Covina, 5 mi away | 24/7 | Emergencies |
| 3 | Terminix | 61 | 4.7★ (2,287) | Santa Fe Springs, 13 mi away | 24/7 | — |
| 4 | Orkin | 61 | 4.7★ (1,367) | Claremont, 11 mi away | 24/7 | — |
| 5 | Orkin | 61 | 4.8★ (387) | San Dimas, 7 mi away | 24/7 | — |
| 6 | Orkin | 61 | 4.9★ (460) | Anaheim, 11 mi away | 24/7 | — |
| 7 | Orkin | 61 | 4.8★ (306) | Brea, 7 mi away | 24/7 | — |
| 8 | PURCOR Pest Solutions | 61 | 4.9★ (562) | Anaheim, 14 mi away | 24/7 | — |
| 9 | Orkin | 60 | 4.8★ (3,667) | Riverside, 23 mi away | 24/7 | — |
| 10 | Western Exterminator | 60 | 4.7★ (596) | Chino, 11 mi away | 24/7 | — |
The 587 best pest control companies in Walnut, 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 West Covina, 5 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 252 Google reviews, listed on Google as “Pest control service”.
#3 Terminix
Based in Santa Fe Springs, 13 mi away
61/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.7★ from 2,287 Google reviews, listed on Google as “Pest control service”.
#4 Orkin
Based in Claremont, 11 mi away
61/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 1,367 Google reviews, listed on Google as “Pest control service”.
#5 Orkin
Based in San Dimas, 7 mi away
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 387 Google reviews, listed on Google as “Pest control service”.
#6 Orkin
Based in Anaheim, 11 mi away
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 460 Google reviews, listed on Google as “Pest control service”.
#7 Orkin
Based in Brea, 7 mi away
61/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.8★ from 306 Google reviews, listed on Google as “Pest control service”.
Based in Anaheim, 14 mi away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.9★ from 562 Google reviews, listed on Google as “Pest control service”.
#9 Orkin
Based in Riverside, 23 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 4.8★ from 3,667 Google reviews, listed on Google as “Pest control service”.
Based in Chino, 11 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 596 Google reviews, listed on Google as “Pest control service”.
Based in Walnut
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.8★ from 525 Google reviews, listed on Google as “Pest control service”.
#12 Terminix
Based in Anaheim, 14 mi away
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 4.9★ from 389 Google reviews, listed on Google as “Pest control service”.
Based in Yorba Linda, 12 mi away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 7,199 Google reviews, listed on Google as “Pest control service”.
#14 the bugman
Based in Anaheim, 12 mi away
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 2,576 Google reviews, listed on Google as “Pest control service”.
Based in Corona, 20 mi away
60/100CR ScoreRanked #15 because of its Google rating and review volume: 4.6★ from 11,523 Google reviews, the most in Walnut.
Based in Los Alamitos, 18 mi away
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.7★ from 4,764 Google reviews, listed on Google as “Pest control service”.
Based in Ontario, 11 mi away
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.8★ from 244 Google reviews, listed on Google as “Pest control service”.
#18 Orkin
Based in Costa Mesa, 23 mi away
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 1,992 Google reviews, listed on Google as “Pest control service”.
Based in Baldwin Park, 7 mi away
59/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.7★ from 135 Google reviews, listed on Google as “Pest control service”.
Based in Corona, 18 mi away
59/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 9,224 Google reviews, listed on Google as “Pest control service”.
Based in Placentia, 11 mi away
59/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Pest control service”.
Based in West Covina, 14 mi away
59/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 363 Google reviews, listed on Google as “Pest control service”.
Based in Orange, 13 mi away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 301 Google reviews, listed on Google as “Pest control service”.
#24 Terminix
Based in South El Monte, 11 mi away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.7★ from 159 Google reviews, listed on Google as “Pest control service”.
#25 Orkin
Based in Commerce, 17 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.8★ from 299 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 587 ranked pest control companies here; the rest are on their profiles.
Also serving Walnut
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 |
|---|---|---|
| All Pro Pest Control | 5.0★ (2) | 8 mi |
| AmeriCal Termite Co. | 5.0★ (2) | 10 mi |
| Apex Shield Exterminators | 4.5★ (2) | 3 mi |
| B & S Pest Control Corporation Claremont CA | 5.0★ (2) | 11 mi |
| EcoZone Pest Control | 5.0★ (2) | 10 mi |
| Everguard Exterminators | 3.0★ (2) | 11 mi |
| family bees removal has 3 same names | 5.0★ (2) | 11 mi |
| Hirst gopher control | 5.0★ (2) | 10 mi |
| Insecta Pest Solutions, Inc. | 1.0★ (1) | In Walnut |
| Lady Bugs Termite & Pest Control | 5.0★ (2) | 7 mi |
| Mercury Termite & Pest Control | 3.0★ (2) | 8 mi |
| Morgan Termite Control | 5.0★ (2) | 6 mi |
| Nexa Guard Pest Services | 4.5★ (2) | 6 mi |
| OC Bug Company | 5.0★ (2) | 7 mi |
| Pastene Pest Control | 4.0★ (2) | 7 mi |
| Pest Commander Pest Control | 5.0★ (2) | 4 mi |
| Placentia Pest Control | 5.0★ (2) | 10 mi |
| Socal Rodent Exterminator & Control | 5.0★ (2) | 10 mi |
| The Bug Solution | 5.0★ (2) | 9 mi |
| Yorba Linda Pest Control | 5.0★ (2) | 9 mi |
How we ranked Walnut pest control companies
We scored 587 Walnut 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 Walnut 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 Walnut: frequently asked questions
Who is the best pest control company in Walnut?
By CR Score, the highest-ranked pest control company in Walnut, CA is Orkin with a CR Score of 63/100. It has 4.8★ from 3,213 Google reviews. It is open 24/7. CURA Termite & Pest Control - West Covina (#2) and Terminix (#3) follow. We ranked 587 pest control companies on ten factors, last updated November 3, 2026.
How many pest control companies are there in Walnut?
ContractorsRanked ranks 587 pest control companies serving Walnut, CA. 1 of them is based in Walnut; 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 Walnut are open 24/7?
146 ranked pest control companies in Walnut post 24/7 hours. The highest-ranked are Orkin (#1), CURA Termite & Pest Control - West Covina (#2) and Terminix (#3). Hours come from each business's Google listing as of November 2026, so call to confirm.
Which pest control companies in Walnut work on weekends?
410 of 587 ranked pest control companies post Saturday hours and 235 post Sunday hours. The highest-ranked open Saturdays are Orkin (#1), CURA Termite & Pest Control - West Covina (#2) and Terminix (#3). Posted hours are office hours; crews may book weekend jobs separately.
What Google rating do Walnut pest control companies have?
The median Google rating among 587 rated pest control companies in Walnut is 4.9★, with a median of 19 reviews. Brooks Pest Control has the most, 11,523 reviews, and ranks #15. 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 Walnut count in this ranking?
Yes, if they are within 25 mi of the Walnut 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 Walnut
- November 2026: CR Scores recalculated for 587 pest control companies serving Walnut.
- November 2026: 13 duplicate listings merged.
More pest control companies and Walnut pages
Pest control companies near Walnut
- Pest control companies in South San Jose Hills, CA607 ranked
- Pest control companies in Diamond Bar, CA528 ranked
- Pest control companies in Rowland Heights, CA645 ranked
- Pest control companies in Valinda, CA601 ranked
- Pest control companies in La Puente, CA625 ranked
- Pest control companies in Covina, CA497 ranked
- Pest control companies in West Covina, CA576 ranked
- Pest control companies in Hacienda Heights, CA667 ranked
- Pest control companies in West Puente Valley, CA612 ranked
- Pest control companies in Chino Hills, CA572 ranked
Other trades in Walnut
- Roofers in Walnut2062 ranked
- Plumbers in Walnut1522 ranked
- Electricians in Walnut1048 ranked
- HVAC contractors in Walnut1524 ranked
- General contractors in Walnut1543 ranked
- Painters in Walnut236 ranked
- Landscapers in Walnut282 ranked
- Handymen in Walnut114 ranked
- Kitchen remodelers in Walnut781 ranked
- Bathroom remodelers in Walnut771 ranked
- Flooring contractors in Walnut691 ranked
- Tile installers in Walnut113 ranked
- Drywall contractors in Walnut45 ranked
- Concrete contractors in Walnut447 ranked
- Fence contractors in Walnut321 ranked
- Deck builders in Walnut174 ranked
- Siding contractors in Walnut127 ranked
- Window installers in Walnut771 ranked
- Gutter installers in Walnut246 ranked
- Insulation contractors in Walnut238 ranked
- Solar installers in Walnut710 ranked
- Garage door repair companies in Walnut319 ranked
- Foundation repair companies in Walnut242 ranked
- Tree services in Walnut354 ranked
- Masonry contractors in Walnut250 ranked
- Water damage restoration companies in Walnut1361 ranked
- Home builders in Walnut893 ranked
- Demolition contractors in Walnut174 ranked
- Window cleaners in Walnut118 ranked
- Pressure washing companies in Walnut139 ranked
- Paving contractors in Walnut274 ranked
- Auto glass repair shops in Walnut529 ranked
- Septic service companies in Walnut123 ranked
- Excavating contractors in Walnut76 ranked
- Pool builders in Walnut807 ranked
- All contractors in Walnut