Highly recommend this company! They were affordable, friendly, and quick cleaning all our air vents, registers, and dryer vent. They even offered recommendations to help us maintain the cleanliness and avoid future repairs / mold issues. Would absolutely recommend them to friends and hire...

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TRUSTED BY SAINT LOUIS, MO HOMEOWNERS
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Verified mold testing and remediation services reviews
Verified Reviews for Mold Testing And Remediation pros in Saint Louis, MO
Last update on October 11, 2025
- Aj A.
- Jonathan W.
Called CNO Comfort Zone given the good reviews here and the fact they were a family-owned business. Within 3 hours of my initial call, two men from CNO arrived ahead of schedule, wearing masks. Using special equipment, they tested the line set and found the leak, repaired it, pressure tested...
- Martin D.
He found no mold. He made excellent recommendations to prevent any mold from forming. Also, he showed me how to program my dehumidifier. Very professional. Highly recommend.
- Kristen S.
They finished the work in one day, but had to come back and redo the crown molding the next day. They also touched up some areas. Great job overall and very reasonably priced.
- Catherine F.
They put in their mitigation system. They tested again, and I did not quite pass. So they were willing to work with me and had me do a bunch things to keep the price down. Most home owners wouldn't want to crawl around and do what I did.
- Christian C.
There was water damage in my unit that caused mold & rapid any came out and corrected all the issues. The team was professional & quick. They were also very knowledgeable. Water damage & mold remediation.
- Gregory L.
I had a question about setting up the test and they were very responsive and helpful. The kit itself arrived quickly, and once I sent back the test vials, the results arrived by mail a few days later. We were very satisfied.
- Cheryl S.
Mike was a great home inspector. He set up the sewer and radon testing for us, and did a thourough job of inspecting a home we just purchased. He was on time and prepared for our appointment. I appreciated his honesty in pointing out what didn't need to fixed right away or what was an...
- Michael S.
Wellington had tested the piping and they were helpful and flexible in scheduling the work. There was some confusion about whether they were going to remove the old insulation or just encapsulate it. That is the only reason I'm giving them a B in one category. But they did step up and take...
Find Mold testing and remediation specialists in Saint Louis

MCC Cleaning & Restoration
MCC Cleaning & Restoration
MCC Cleaning & Restoration is a local disaster recovery company in O'Fallon, Missouri, established in 2015. They specialize in water damage restoration, fire damage restoration, and air duct cleaning services. Their service area covers St. Louis, St. Charles, Warren, and Lincoln Counties. MCC Cleaning & Restoration prides itself on its 24/7 emergency service availability and works directly with insurance companies to streamline the claim process.
"Great, done on time"
Carol W on August 2025
MCC Cleaning & Restoration is a local disaster recovery company in O'Fallon, Missouri, established in 2015. They specialize in water damage restoration, fire damage restoration, and air duct cleaning services. Their service area covers St. Louis, St. Charles, Warren, and Lincoln Counties. MCC Cleaning & Restoration prides itself on its 24/7 emergency service availability and works directly with insurance companies to streamline the claim process.
"Great, done on time"
Carol W on August 2025

Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair has been family owned and operated since 2001. No subcontractors or commissioned sales people are used. Cost is determined by the job. Due to our experience installing waterproofing systems, fixing foundations as well as our Radon testing and mitigation experience gives us the skill sets to install Radon resistance waterproofing systems. Most of our competitors don't have this combination of skill sets there before may waterproofing systems that are installed can potentially contribute to elevated radon levels in their customer's home. We can solve most foundation/basement problems as well as improve our clients indoor air quality which is a very high priority for us. It is our commitment and responsibility to insure our customers have healthy homes and we are do nothing to compromise that. We are not tied to or required to use any propriety systems or products that many companies are vested in. We use the systems and products that we feel provide the best solution for our client's problem. For customers who want a more finished look than a normal crack injection, we offer a special surface seal that can be removed from the surface of the wall after a crack is injected leaving only the repaired crack line visible. We can also paint the basement walls to make both crack repairs and carbon fiber repairs much less visible. In addition to radon testing and mitigation we really are positioned to be a one stop shop. There are several brand name products and systems we use on a regular basis. "Fortress Stabilization" carbon fiber wall stabilization products, "Stabilizer" top and bottom adjustable I-beam brackets used with vertical I-beams for wall stabilization, and "Kryton" crystalline waterproofing products used when crack injection and other waterproofing methods will not be effective, We also use "RadonAway" radon mitigation fans for all of our radon mitigation system installation. Due to our experience repairing foundation wall cracks many times we can provide an accurate repair price over the phone with just a good discription from the client or a clear picture of the crack.
"it went fine, he came to see the problem & a week later he fixed it. water is no longer coming in."
Kathleen B on August 2020
Quacker's Waterproofing & Basement Repair has been family owned and operated since 2001. No subcontractors or commissioned sales people are used. Cost is determined by the job. Due to our experience installing waterproofing systems, fixing foundations as well as our Radon testing and mitigation experience gives us the skill sets to install Radon resistance waterproofing systems. Most of our competitors don't have this combination of skill sets there before may waterproofing systems that are installed can potentially contribute to elevated radon levels in their customer's home. We can solve most foundation/basement problems as well as improve our clients indoor air quality which is a very high priority for us. It is our commitment and responsibility to insure our customers have healthy homes and we are do nothing to compromise that. We are not tied to or required to use any propriety systems or products that many companies are vested in. We use the systems and products that we feel provide the best solution for our client's problem. For customers who want a more finished look than a normal crack injection, we offer a special surface seal that can be removed from the surface of the wall after a crack is injected leaving only the repaired crack line visible. We can also paint the basement walls to make both crack repairs and carbon fiber repairs much less visible. In addition to radon testing and mitigation we really are positioned to be a one stop shop. There are several brand name products and systems we use on a regular basis. "Fortress Stabilization" carbon fiber wall stabilization products, "Stabilizer" top and bottom adjustable I-beam brackets used with vertical I-beams for wall stabilization, and "Kryton" crystalline waterproofing products used when crack injection and other waterproofing methods will not be effective, We also use "RadonAway" radon mitigation fans for all of our radon mitigation system installation. Due to our experience repairing foundation wall cracks many times we can provide an accurate repair price over the phone with just a good discription from the client or a clear picture of the crack.
"it went fine, he came to see the problem & a week later he fixed it. water is no longer coming in."
Kathleen B on August 2020

AC Environmental, Inc.
AC Environmental, Inc.
AC Environmental, Inc has been in business for over 5 years. However, the owner and laborers have been in the abatement industry for over 15 years. We provide asbestos/lead abatement, and asbestos/mold inspections along with mold remediation. Customer satisfaction and service is a must for us.
"They got in, got out and provided detailed results. Answered questions and very knowledgeable. Would definitely use again and highly recommend."
Felicia W on May 2025
AC Environmental, Inc has been in business for over 5 years. However, the owner and laborers have been in the abatement industry for over 15 years. We provide asbestos/lead abatement, and asbestos/mold inspections along with mold remediation. Customer satisfaction and service is a must for us.
"They got in, got out and provided detailed results. Answered questions and very knowledgeable. Would definitely use again and highly recommend."
Felicia W on May 2025

Mold Test Company IL
Mold Test Company IL
When you have mold, making the correct decisions right away is critical. Whether it’s mold in your home, school, place of work or apartment there are many factors to consider. Are you going to be involved in a Mold Lawsuit? Will you be seeking property damages? Is anyone sick from mold exposure? Will you be seeking medical damages? Will you need expert witnesses? If so, what kind? Do you just want to test to be sure your environment is safe? Do you need Post Mold Remediation Testing to ensure a good job was done? These and other factors are questions which need to be answered before any environmental testing starts. It’s important to know what your goals are and why your testing. Different goals require different environmental tests, i.e. medical damages & property damages require different environmental tests to prove your case in court. Tests that a common or inexperienced mold inspector would not
"Great job!"
Marc R on July 2025
When you have mold, making the correct decisions right away is critical. Whether it’s mold in your home, school, place of work or apartment there are many factors to consider. Are you going to be involved in a Mold Lawsuit? Will you be seeking property damages? Is anyone sick from mold exposure? Will you be seeking medical damages? Will you need expert witnesses? If so, what kind? Do you just want to test to be sure your environment is safe? Do you need Post Mold Remediation Testing to ensure a good job was done? These and other factors are questions which need to be answered before any environmental testing starts. It’s important to know what your goals are and why your testing. Different goals require different environmental tests, i.e. medical damages & property damages require different environmental tests to prove your case in court. Tests that a common or inexperienced mold inspector would not
"Great job!"
Marc R on July 2025

Mold One Missouri
Mold One Missouri
We have a revolutionary dry fog process that changes the way mold treatment is done. Within the span of a few hours, your home will be completely sterilized of any mold, bacteria, and viruses that are within along with deodorizing any smells.
"Very knowledgeable and honest!"
Robert S on September 2024
We have a revolutionary dry fog process that changes the way mold treatment is done. Within the span of a few hours, your home will be completely sterilized of any mold, bacteria, and viruses that are within along with deodorizing any smells.
"Very knowledgeable and honest!"
Robert S on September 2024

Mold Test Company MO
Mold Test Company MO
At Mold Test Company KS, we take great pride our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"."
Keri R on November 2022
At Mold Test Company KS, we take great pride our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"."
Keri R on November 2022
Voda Cleaning & Restoration of O'Fallon-Wentzville
Voda Cleaning & Restoration of O'Fallon-Wentzville
Your Cleaning & Restoration Sidekick. At Voda, our mission is to make life easier for those responsible for creating inviting, healthy spaces where people live, work, and do business. We specialize in a wide range of cleaning & restoration services to keep your home or business clean, fresh and free from damage including: carpet cleaning, floor cleaning, tile & grout cleaning, upholstery cleaning, odor removal, water damage restoration, storm damage restoration, mold mitigation and more!
"Very well. Very professional, very good cleaning job. Completely happy."
Mike M on October 2024
Your Cleaning & Restoration Sidekick. At Voda, our mission is to make life easier for those responsible for creating inviting, healthy spaces where people live, work, and do business. We specialize in a wide range of cleaning & restoration services to keep your home or business clean, fresh and free from damage including: carpet cleaning, floor cleaning, tile & grout cleaning, upholstery cleaning, odor removal, water damage restoration, storm damage restoration, mold mitigation and more!
"Very well. Very professional, very good cleaning job. Completely happy."
Mike M on October 2024
Sam's Home and Commercial Inspectors
Sam's Home and Commercial Inspectors
Sam's Home and Commercial Inspectors use the latest technology with the good old fashion eyeballs to perform each inspection at the highest level. To ensure every inch of the property is inspected to include structural, electrical, air-conditioning system, plumbing and more. We go the extra mile. We have Certified Master Inspectors standing by to do your inspection at the highest level possible. Inspectors are fully trained by AHIT and InterNACHI as well as certified labs for Radon, Termite, and mold Inspections. We find issues that other Inspectors fail to see. We even have a robot that can get into the crawlspace when humans can't or won't. Let us prove to you that we are the best. We follow the motto, "Let No Man Deceive You".
"Exceeded my expectations. I work in the commercial mechanical, electrical, plumbing world and they found stuff I missed."
Mitchell W on May 2025
Sam's Home and Commercial Inspectors use the latest technology with the good old fashion eyeballs to perform each inspection at the highest level. To ensure every inch of the property is inspected to include structural, electrical, air-conditioning system, plumbing and more. We go the extra mile. We have Certified Master Inspectors standing by to do your inspection at the highest level possible. Inspectors are fully trained by AHIT and InterNACHI as well as certified labs for Radon, Termite, and mold Inspections. We find issues that other Inspectors fail to see. We even have a robot that can get into the crawlspace when humans can't or won't. Let us prove to you that we are the best. We follow the motto, "Let No Man Deceive You".
"Exceeded my expectations. I work in the commercial mechanical, electrical, plumbing world and they found stuff I missed."
Mitchell W on May 2025
Abatement Solutions
Abatement Solutions
Abatement Solutions is a professional asbestos abatement and mold remediation company. We offer a combined 18 years of experience to help us get the job done.
Abatement Solutions is a professional asbestos abatement and mold remediation company. We offer a combined 18 years of experience to help us get the job done.
SPRAY SERVICES INC.
SPRAY SERVICES INC.
Asbestos, lead, and mold remediation firm. Abatement projects executed with integrity and due diligence. 30 years of experience in environmental remediation. Licensed in Missouri and Illinois.
Asbestos, lead, and mold remediation firm. Abatement projects executed with integrity and due diligence. 30 years of experience in environmental remediation. Licensed in Missouri and Illinois.
FAQs for mold testing and remediation projects in Saint Louis, MO
Some states require mold removal specialists to be licensed, while others require licensed mold testing companies to create remediation protocols that any contractor can carry out. You can use our state licensing tool to find requirements in your area. In either case, it’s imperative that you hire an experienced professional for mold removal to ensure the safety of your home and your family.
It’s possible to scrub mold off of visible surfaces yourself, but it’s not usually a good idea. Mold is not only a potential health risk, but it’s also difficult to treat in its entirety, especially because it can grow behind walls and in other hidden areas a DIYer might miss. Since mold is a serious and often pervasive issue, you should hire a professional that will remove all of the mold—including any that might be hidden—run industrial air scrubbers to remove airborne particles, and complete mold testing to ensure the underlying problem is solved.
The most effective way to remove mold includes testing affected surfaces and the air for spores, creating a protocol for removal, carrying out the steps within the protocol, running air scrubbers for the recommended amount of time, and then completing a post-remediation round of testing to confirm the issue is solved. Since this work is very involved and there are health risks if done incorrectly, you should always hire an experienced professional to handle mold removal.
The average cost for mold remediation is around $2,200, and most projects fall somewhere between $1,100 and $3,300. Your total will depend on many factors, including the surface area that is affected by mold, the extent of the issue, how much building material your professional needs to replace, whether or not testing is necessary for safety reasons, and existing indoor air quality.
Mold removal will take between one and five days in most cases, but severe mold issues can take several weeks to correct. Your timeline will depend on how much mold there is in your home, where the mold is located, and how much testing and aftercare is required. If you have mold behind your walls or you have an excessive amount of mold that requires removal and running air scrubbers for several days, you could be looking at over a week for the process to be completed.
The Saint Louis, MO homeowners’ guide to mold testing and remediation services
From average costs to expert advice, get all the answers you need to get your job done.
Budgeting for an indoor air quality test can be worth the cost if you are worried about your health or have moved into a new home.
Mold remediation cost can quickly escalate. But if you have mold in your home, the cost for mold remediation is worth it.
The cost of a mold inspection might seem high, but it’s one of the best investments you can make for your health and home. Read on to learn cost-saving tips.
A damp, flood-prone basement is the perfect habitat for mold. Here's how to get rid of mold in your basement and keep it from coming back.
Common reasons for mold in kitchen cabinets include high humidity and leaks. Keep reading to learn more about why mold is growing in your kitchen cabinets.
What causes mold? Excessive moisture in your home is likely to blame. Read on to learn more about what causes mold and how to prevent it.
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