No hassles and prompt service, although pricey! We called them up for rodent cleaning services and they were able to give us a slot in the very next week. Ryan came thrice to our house, he was thorough and we got what we were promised. Overall, we are very satisfied with the experience. read more

Best Pest Control ever!!! Zehna made our visit appointments, very professional and worked around our schedule. Mike the pest control specialist was excellent. He's very good at what he does. He took the time out to explain how pests were getting into the house and he also covered up the entry points. I will definitely hire them again for any pest control issues we have! read more

I have never had a rodent problem in the past, Byron had came and set up traps around my home for the mouse/rat problem I am having. He was very friendly and educated me about what I could do to get rid of them. He even arrived early for the appointment which isn't something that people ever do, I really appreciated his work and I hope that it will assist in catching these rodents... read more

Byron was really great! He was attentive to our concerns about a rat problem. He has been quick to find out the problem and entry's of the rats to our home. And on top of that he's very polite, friendly, and professional. I would definitely recommend Keystone, especially if they are employing people like Byron. read more

I had a major problem with fleas at my house in San Mateo. Keystone was awesome! At first they said they were really busy and couldn't come out for over a week but then was able to find an opening to get the treatment done the next day! The technician, James, was courteous and knowledgeable and treated our house and yard. After the treatment we had a problem where more fleas came out of a bush near our fence (which I didn't know about) and Keystone jumped right on it and has planned a second treatment (at no charge) to help us solve our problem. Very professional crew and would recommend. read more

Trevor from Keystone- you are AWESOME! Trevor came by today and just left after a thorough job and inspection of my property. He was very detailed and took the time to listen to the issues we faced. He advised me about the spiders and proceeded to eliminate them with the high pressure backpack "Spider" sprayer. Prior Keystone visits did not apply this spraying technique and I am glad that Trevor did the job and did the job right the FIRST TIME. We literally saw spiders falling from my roof line and onto the floor. Excellent work and keep up the excellent work! read more

We use Keystone at work, and when we had a mouse problem we called them to the house. Awesome! The tech, Byron, was courteous, polite, and very concerned about working quietly to not wake our napping granddaughter! He explained the options, and went to work. I have always been happy with the knowledgeable and professional staff at Keystone, and Byron is the best! read more

This review is for Trevor- he was on time, nice and very helpful! I called Keystone about a mice problem and he was very knowledgeable about ways to fix the problem and keep mice from getting in. Thanks Trevor! read more

Also an ant problem over here and I've used Keystone before and decided to go with them again. Trevor Davis deserves high praise! He came, destroyed, and explain how to look for these ant colonies. He showed my husband what he did and was very detailed and thorough. Most of all, I have two little ones at home so he made sure what he used would be safe and harmless indoors. I am so amazed with Trevor's level of service and experience. read more

Great communication skills and they did a great job. I had a bad case of feral cat fleas infesting my backyard and called Keystone. They had a scheduling mishap on my appointment, but immediately apologized sincerely and profusely, and offered a discount as further apology. Another tech, Byron, came out the following day, listened carefully as I showed him the areas I needed him to focus on, and gave clear answers to my questions. He also apologized for the missed appointment. The invoice had notes detailing my description of the problem areas. So I feel like the company as a whole has good communication both internally and with the customer. And best of all the fleas are gone! Keystone's warranty is 30 days. I'll try to keep the cats and their fleas out as best I can, of course, but it's great to know I can call Keystone back. read more

I called Keystone after a quick Yelp Search. I had what I thought was a mouse problem in my home. I had seen one small mouse, and had also caught one. I wasn't sure where they were coming from, but could see that they were still around. I called a couple other companies from Yelp, and they all had voice mail. The receptionist at Keystone was incredibly nice and explained everything. They did 3 visits, all with the same rep. He was professional and very courteous. The first visit he did a inspection, and laid out traps. The second one he patched up a some spaces in the kitchen, under the dishwasher and in the garage. The third visit was just a wrap up and was only 2 minutes. Overall, they were really good, and it did get rid of the problem (3 weeks passed now). It was fairly pricey though for the time spent, and the type of tracks. They were the same ones we had picked up from home depot, they had just a lot more around the house. read more

Just got off the phone with Justin. He was very informative and honest about their services. Prior to calling Keystone, I spoke to another company in Pleasanton and they require $98 just to get an estimate. I would highly recommend Keystone. read more

We've used Keystone services for 20 yrs. and had always been very happy with their professional, courteous & efficient service. We just recently had problems with roof rats, Mario did a great job in securing the house so they're not able to get in. Fortunately rats were not found, only mice. He came back a few times to make sure those mice are gone. Keystone also guarantees they're work for 6 mos.. Dawn at the office is also always friendly and helpful. Thank you Keystone !! read more

We used Keystone a year or two ago to spray for ants and that experience was fine. When they came back in Feb, we called them out again. The ants were back by May and when I called the woman who answered wasn't too concerned that their first service didn't work. Her words - we offer a 30-day guarantee, we don't offer a lifetime service (three months = lifetime?). She offered to take $20 off the price for another visit. This would've been over $400 for ant spray in three months. I called Manor Pest instead, they had better pricing and much better customer service. Still annoyed that due to working with Keystone I've spent so much on ant control but happy to have found an alternative. read more

Unlike a few other places where you have to get an annual contract ( around 400-500 per year), this place can do a one time thing which last at least six months. I had really bad ant problem and they are all GONE COMPLETELY next day after their service. Wonderful! And I need the service like twice a year at most , save me a lot money . Good value for high quality service . read more

Totally impressed with my experience with Keystone. I had both a wasp nest that needed to be removed and gophers in my lawn. Keystone was able to take care of both, and used a trap for the gopher, not poison which is dangerous to other animals. They offer a 30 day guarantee. I just noticed a new wasp nest a couple weeks after the old one was removed, and they will be out to take care of it today at no additional cost. Tina, who took my calls, is friendly, efficient and generally delightful to work with. Great local company. read more

Fantastic experience from start to finish. They were able to schedule and come spray for ants, while making sure that I was comfortable and understood the work being done BEFORE it was done. The guys that showed up were very friendly and were awesome individuals. read more

Since the weather is starting to heat up in the bay area, I noticed a ton of ants outside my house, and some were making its way into my garage. Yuck!! I called Keystone right away before the problem got any worse and spoke with Dawn. This was the first time I've ever called a pest control company for anything so I had no idea what I needed to do. Dawn was very helpful and knowledgeable and talked me through the entire process from start to finish. I called on a Monday, and she had an available specialist at the time to come over, but I was in class, so had to wait until Wednesday for someone to swing by. James was over at my house right on time and he was very easy to talk to. Very knowledgeable and didn't mind me asking a million questions since I had safety concerns re: pest control and my toddler and dog. He told me some information about the two sprays he would be using, and even wrote the names down so I could google them later. The whole process took maybe about 45 minutes - including spraying the garage, the front yard, and our entire backyard. He was able to locate the ants nest (ick, I have chills just writing that), and he took care of that problem. I think he said it might take a few days for the ants to really go away, but within a few hours, they were all gone!! He also went above and beyond to help me. Our house has a crawl space, and the small entrance on the side was open because my husband haven't had the time to screw it back on. James was concerned that a raccoon or some other small animal could get in and create a bigger problem, so he closed it up for me. He was also able to identify a spider that I saw a year ago just from looking at a blurry iPhone photo. This guy really knows his stuff! I am super happy that I called Keystone to come help me with my ant problem. They really do care about helping their customers! Thanks Keystone! read more

My experience with Keystone is very limited, so I can't really justify giving anything above 3 stars. However, given the other glowing reviews on this page I'm well happy to contact them again in the future if any problems arise. ~ THE ISSUE ~ For the past couple days, my house became infested with this tiny brown looking bug. They don't bite, but they're pretty annoying. The first problem was that we've never seen this bug before so no one in our house knew what the heck they were. After some googling, I thought they were carpet beetles but I'm no entomologist so I wasn't positive. ~ MY EXPERIENCE ~ I called Keystone, who advised me to send over a photo of the bug to be identified. They got back to me and told me that it was a Cigarette Beetle, not a carpet beetle, which I'm grateful to them for (now I know what I'm dealing with). The only strange thing that made me lose a little faith is that the woman over the phone pretty much regurgitated information off a website. Literally she just read me a page off the website. I can't deny that Keystone were helpful because of the fact that they helped me identify the bug, but I hardly felt like I was talking to "bug experts". --- All in all, I do like Keystone and will be using them in the future (especially if the cigarette beetle fiasco can't be resolved myself). An additional positive is that I do appreciate they weren't hasty to make a house visit and take my money. But the fact that I was just read a page off a website really didn't sit well with my confidence in them and can't warrant anything above 3 stars. read more

Very good service, they follow the time window what they commit and they helped us get rid of ants problem and even stood by their 30 day guarantee. We had only few ants surface back after 25 days and Keystone came back and did the treatment again at no extra cost. We will use them every year from now on! read more

I've used Keystone Pest Control several times over the last few years and have always been pleased with the service. They answer the phone, set up a prompt appointment, show up on time, and fix the problem the first time with no hassle. The price is more than fair and I would not hesitate calling them back in the future or recommending them to my friends and family. They first fixed an ant problem for me after a bathroom remodel upset their trail. After having a technician come look over the situation he sprayed a solution down and I haven't had an issue with ants since, 6+ years! You can't ask for much more than that. Recently I had a strange issue with my roommate getting stung by a wasp in the bathroom. I contacted Steve with Keystone who was able to get me a next day appointment. The technician was on time and not only found the problem (small hive in exhaust vent) but did some preventative maintenance on my roof to make sure this wouldn't happen again. If you need a pest control service, THIS IS THE COMPANY TO DEAL WITH!! A+++++ read more

I have been using Keystone Pest Control at my old home and at my new home for quite a while, probably at least 6 years. I am very happy with their service and their pricing. I have not had an ant since they have started. I used them at my old home and when I moved I was not even thinking about pest control until ants started showing up in my kitchen, this is when I called them to start service at my new home. No ants since. Very polite and professional service people. I recommend them. read more

We had a rodent problem recently after a house in my neighborhood was re roofed we assume. Once roof was removed to replace we noticed issues at our home 4 doors away. Service tech was Mike. He was excellent in finding the places where they could enter from the outside, which he fixed, set traps and came back on two occasions to remove the dead ones over a one week period. About a week after his last visit we discovered one more and he came back and put traps out. We are in the process of securing a doggie door and a dryer vent and then he will come and pick up traps for the last time. Thought the fees were quite reasonable to rid our house of this problem. read more

Trevor is amazing did and made sure everywhere was done! Even the outside and back yard!! Thank you so much cause spiders are not our thing!

purcor recently acquired donavan's pest control. following this acquisition of donovan's pest control, there was a huge problem with invoices and collections and a complete chaos of the customer invoicing. it took multiple calls and hours to get invoicing straightened out. i suggest using other companies for pest control. an incredible headache for a simple pest service. read more

We had a pesty mole at our house and Keystone was very helpful and determined to help us get rid of the problem. I appreciate how Keystone personnel worked together to get the job done. In the end, Mike was able to eliminate the problem. We have not seen any mole holes in over two weeks. Thanks very much. read more

Had a flying insect problem, called a few places and settled with Keystone... Called them, guy got all my info, said he would be right over.... That was 4 days ago, NEVER showed up!!! Worst experience from Yelp Ive ever had..... read more

I called Keystone for an overwhelming ant problem at our house (I'm usually a pro at riding ants but this house is literally on top of an ant hill). I had seen them once before at our old residence when the owner had them come out for a spider problem and they did good work. I called and Mike quoted me a price. It was a tad more than I expected but he guaranteed the work so I agreed. They came out a few days later and treated while I was at work so just the outside. Within 24 hours, all the ants inside AND outside my house were gone! It's been 2 months and they are still gone *knock on wood*. They have been a life saver. Worth the money! I just feel bad because I misplaced the invoice and I was a bit late in paying them so I hope they forgive me. read more

We have been using Keystone pest control out of Hayward for year or so. They come every other month. We had a Black widow, flea, and ant problem. No more problems now. The team at keystone are all awesome. I point out and explain our concerns and they take care of it. Trevor D. Was waiting at my house for a 2:30 appt today. I thought I was late. Nope he was early. We have no bug problems with our regular maintenance. Give them a shot and ask for Trevor D. read more

Years ago, Keystone successfully helped me resolve a home rodent infestation. The rodents returned a decade later - and so did Keystone. While it took multiple visits and efforts to solve the problem, Keystone's technician was great - professional, personable, friendly, helpful and thorough. The company stands behind their contract and details . . . excellent service and a reasonable cost. If ever I have another pest issue, Keystone will be solving the problem. A+A+A+A+ read more

Keystone saved my sanity. I have an unreal disgust for ants and they came in September when I was almost ready to burn the house down. I'd tried everything and nothing lasted long enough. The tech who came was wonderful and fast. Ants never reappeared. I'll definitely used them again. read more

Great service and great value. I had a few communications via Yelp messaging that were very helpful and informative (unlike some other companies) so decided to go with Keystone for our pest control needs. Booking the appointment was quick and easy, and the guys came on time and took care of our issues (we are already seeing results). Thanks Keystone! read more

We were referred to Keystone by Brother's because we had a wasp nest that needed to be removed. Jonathan was able to take care of it. They offer a 30 day guarantee. I noticed a new wasp nest a week after the old one was removed, and Jonathan came out to take care of it at no additional cost. We're impressed with the service and very satisfied with the experience. Thanks Jonathan! read more

Good Customer Service. They listened to my situation and said, i dont really need the control done but they can still do it if required. They were not greedy by saying that we will get the service done though there is no problem. Will reach out to them if i see a problem in future. read more

My experience with keystone from start to finish was excellent. Dawn and James was a pleasure to work with. They really care about helping you. That is very rare nowadays and I really appreciate the time they both took to explain the process and what is being used to kill the flea problem i was having in my house and in my backyard. I wouldn't hesitate to call them again. Thanks keystone. read more

Life savers truly! Professional, on time, responsive, affordable, thorough. I don't fill out reviews but these guys deserve it. Albeit a year later but I haven't had any fleas since. Only regret not calling them sooner :) read more

We were doing some routine cleaning around the house when we saw it ... mouse droppings, hidden in the corner behind the couch! I immediately called 3 places. The first place sounded good on paper, but could only fit us in 3 weeks out. I have young kids. I need this mouse gone now! The second place was Clark. That guy seemed more interested the monthly plan than to fix the mouse problem. The third place was Keystone. The lady that picked up the phone was very nice. She scheduled the appointment for a couple days later, scheduled all 3 visits at the same time, each 3 days apart. And the price was only half as much! Payment is due on the first visit. Warranty is for 6 months. The first visit was to inspect, set traps, fill in any holes, and write a report. He set box traps on the floor and glue traps way in the back of the counter (where my kids can't reach). They don't do poisons or any chemicals, which is good. He did a decent job, but he was a little laid back. He didn't check the attic until I asked, and then put two more traps up there. Also, he was nice enough to wear booties over his shoes, but did he have to wear them outside the house too? The second visit was to check the traps and add more if necessary. He did a good enough job but he forgot to check the attic traps. He confused us a bit by saying that it could take up to 30 days to be mouse-free. The third and final visit was 3 days later, not 30. The third visit was to check the traps again and collect them. We asked to keep the traps another week and they were ok with that. All in all, it was a good experience. The technician didn't seem super-knowledgeable about the work, but he knew enough to solve the problem. I'd recommend them. read more

Bryan was very efficient kind helpful trustworthy and did the job fast explained if I see anymore nasty pests call them back and they will come out within 30 days. He put me at ease thank you read more

After their second visit, everything looks much better. Will keep updating the review if I see a long term result. read more

So far they are the best. Glad I found Keystone and cancelled Terminex finally. This company seems to know what their doing.