Analyzing 5,827,1615.8M ReviewsFor 16,09716.1K Experts

Experts Reviews · Company report
Certech Environmental Services logoHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%97+56.9Reliability 26%99+25.8Value 15%100+15.2Experts Score= 98Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.98SCORE

Certech Environmental Services

Walnut Creek, CA · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #15Position by Experts Score among all companies we track in this category. of 86 pest control services · 5.0★ from 96 Google reviews

📞 Call (925) 300-1094Request a call backWebsite ↗

Report card

Percentile vs other pest control services (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: satisfaction.

SatisfactionSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Certech Environmental Services is better than 97% of pest control services.A
97
ReliabilityReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Certech Environmental Services is better than 99% of pest control services.A
99
Craft & serviceCraft & service · 0% of the scoreGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Certech Environmental Services is better than —% of pest control services.–
—
ValueValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Certech Environmental Services is better than 100% of pest control services.A
100
MomentumMomentum · 0% of the scorePenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Certech Environmental Services is better than 100% of pest control services.A
100
Replies to reviewsReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Certech Environmental Services is better than —% of pest control services.–
—

Reviews for your job

Customers hired Certech Environmental Services for 8 kinds of job.

Certech Environmental Services for cockroach extermination

Clear ✕
Jobs reviewedHow many Google reviews are tagged with this job.6
★ on this jobAverage stars on the reviews where the customer tagged this exact job (Google’s “Services” field).5.00
Usually paidThe price range customers picked most often for this job.$200+
Category typicalWhat the middle half of customers paid for this job across all companies in the category.$81–$246
Rank for this jobPosition of this company in the Job match ranking for this job among the companies we track.Its Job match: 78/100.How Job match is calculatedBuilt only from reviews Google tagged “Cockroach extermination”:Stars on this job 55%Number of such jobs 25%Overall Experts Score 20%Stars are pulled toward the category average when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.#41 / 58
Said fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.100%

All 6 Google reviews tagged “Cockroach extermination”

Marcus2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★

5 stars! Julian went above and beyond to make sure our pest problem was handled quickly, cleanly, and efficiently. Certech followed up afterward to make sure everything was completely resolved, and the entire job was done professionally with no mess or issues left behind. Really appreciate the excellent service. Thank you, Certech — and especially Julian!

Cockroach extermination
BryanLocal Guide · 38 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★

My house was overwhelmed with cockroaches and certech just kept coming back until the job was done

Paid $200+Reasonable priceCockroach extermination
Alvin2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 6 months ago★★★★★

they provide great service. friendly and professional technician.

Paid $200+Great priceCockroach extermination
Amy2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · Edited a year ago★★★★★

Jonathan is fabulous! He always checks in, is super courteous, and makes sure that we are satisfied with the work performed. Detailed oriented, and focused on solving and preventing our pest problems!

Great priceRodent exterminationSpider exterminationCockroach extermination
Bishal1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a year ago★★★★★

Amazing experience with Daniel for residential and Sergio for the commercial. Justin, the owner is great to communicate with.

Paid $100–120Great priceSpider exterminationCockroach extermination
Wanjikua month ago★★★★★

Rating only, no written review.

Paid $200+Reasonable priceCockroach extermination

Price

$246+112% vs typical pest control services

Bar = middle half of what customers paid · gold mark = category median.

Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Great price 47%Reasonable 53%Overpriced 0%Not sure 0%

Jobs customers hired them for

JobReviewsCategory typical
Ant extermination17$83–$246
Rodent extermination12$103–$371
Spider extermination8$67–$159
Hornet & wasp extermination6$93–$282
Cockroach extermination6$81–$246
Flea & mite extermination4$125–$246
Termite inspection3$103–$323
Termite extermination2$214–$426

Compare with

Banner Pest Services logoBanner Pest ServicesExperts Score 99Walnut Creek · 4.99★Ratman Pest and Termite Control logoRatman Pest and Termite ControlExperts Score 99Walnut Creek · 4.99★Amerimax Pest Management logoAmerimax Pest ManagementExperts Score 98Walnut Creek · 4.98★