Google reviewers rate Certech Environmental Services five stars based on ninety-six reviews, noting that the owner responds to all feedback. Customers consistently highlight punctuality, professional communication, and thorough treatments for pests including spiders, rodents, ants, and wasps. Many appreciate the company's willingness to return for follow-up visits without additional charges and its competitive pricing compared to other local providers.
Google rating: 5.0 out of 5 from 96 reviews (98% five-star).
Reviews on this page: 96 Google reviews (88 with written comments).
Owner responses: the business replied to 100% of reviews.
Most recent review: October 11, 2026.
Service: Pest Control Service serving Walnut Creek, California.
Data from Google, last updated October 26, 2026.
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Customer reviews
5.0
★★★★★
96 reviews on Google
5★94
4★1
3★1
2★0
1★0
Reviews from Google, shown as published (original wording, unedited).
LW
Lauren Weston1 review
★★★★★
We’ve been using Certech for pest control at our house for several years. We used a bigger commercial pest company before and still had tons of bugs. We’re surrounded by open space so critters are a part of life. Since we switched to Certech the bugs have gone way down. Even the spiders, which seem to be very hard to prevent. Recently we heard something crawling around in our attic. Jonathan came out the very next day. He went through our whole crawl space, set traps, checked for droppings, and addressed an opening where he thought a squirrel might be able to get through. Jonathan spent over an hour making sure everything was secure and it was all included in our monthly service. There was no extra cost. The prices are good and the service is outstanding!
Price assessment: Great price
Services: Rodent extermination, Spider extermination, Ant extermination
Pest type: Ants, Rodents, Cockroaches, Spiders, Other
Response from the owner · a week ago
Hi Lauren. Thank you for taking the time to leave this awesome review! Yes - Jonathan is a Rock Star and continues to deliver service excellence. We appreciate your business!
Excellent experience dealing with this company and specifically Jordan. Happy to recommend!
Response from the owner · 2 weeks ago
Awesome feedback Melissa! Thank you for your support and trust of Certech Environmental Services. Yes, Jordan is a great addition to the Certech Family. Cheers
Great service done by Jordan! He was amazing start to finish. I appreciate his hard work. We had a TON of spiders that he took care of. I am very pleased with the service I received.
Price assessment: Reasonable price
Price: $120–140
Services: Spider extermination
Pest type: Spiders
Response from the owner · 3 weeks ago
Awesome feedback! Thank you for your support and your trust. We are your partner in pest prevention. Cheers
We had a great experience, they were on time, very professional. They even came back year later and treated new spot and did not charge. We are very happy. Thank you the help.
Response from the owner · 3 weeks ago
Thanks Diane! Drywood termites can be very challenging in structures that cannot be fumigated. Glad that we could help and thank you for your business! Cheers
Jose is excellent. Great communicator. I've enjoyed working with him.
Pest type: Other
Response from the owner · 3 weeks ago
Hi Tyler - Thank you for leaving this very kind review of Jose's service delivery. We are very lucky to have him in the Certech Family. If we can help in the future, please let us know. Cheers
I can’t express how much gratitude I have towards Certech. For years we had yellow jackets and wasp infestation. A few homes in my area were going through the same thing. We tried another exterminator company and it didn’t work. But when things got scary and we had way too many wasps and yellow jackets, we contacted Certech and they did an exceptional job!! The person who came to our house was Gordon and he explained clearly what kind of wasps and yellow jackets they were and what he was going to do and how long it will take before I see results. It was almost immediate. I couldn’t believe how successful they were at removing all of the wasps and nests and Gordon was super professional and did a fantastic job!! Yay, we’re wasp-free and we can leave the house without worrying about the wasps and yellow jackets surrounding our house.
Price assessment: Reasonable price
Services: Hornet & wasp extermination
Pest type: Other
Response from the owner · a month ago
Hi Olivia. This is an amazing testimonial of Gordan's performance. We are humbled and honored by your kind words. Thank you for your business!
Another awesome service from Certect Environmental Services! We are happy! We recommend them! Jonathan was our technician and he is beyond great! And shoutout to Justin! 5 STARS!
Price assessment: Reasonable price
Price: $100–120
Pest type: Ants, Termites, Rodents, Cockroaches, Spiders, Bed bugs, Mosquitoes, Other
Response from the owner · a month ago
Shazaam! What a wonderful review of Jonathan. We are humbled by your feedback and are glad that we are partners in pest prevention. Cheers
I had an amazing experience with Jordan from Certech! He worked efficiently and explained things thoroughly. The communication was extremely professional as well!
Price assessment: Great price
Price: $100–120
Services: Service not listed
Pest type: Other
Response from the owner · a month ago
Thanks Eric! Jordan is a true professional and we are grateful to have him on our team. If we can help out in the future please let us know. Cheers
Jordan was really efficient and very helpful. I will definitely continue using their service.
Price assessment: Reasonable price
Price: $60–80
Services: Rodent extermination, Ant extermination
Response from the owner · a month ago
Hi Tanya! These are wonderful and kind words. Thank you for taking the time to leave us this 5 star review. Jordan is a great addition to the Certech Family. Please think of Certech next time that we can help. Cheers
