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Complete Mold Remediation in St. Louis, MO

Trusted by St. Louis families for fast, safe, and guaranteed mold remediation. In a region with some of the Midwest's highest mold allergen levels, Claro provides reliable mold testing, remediation, and restoration services that protect your home and your family’s health.
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5.0
(11 reviews)
O'Fallon, MO
St. Charles, MO
Clayton, MO
Ladue, MO
Frontenac, MO
Chesterfield, MO
Creve Coeur, MO
Kirkwood, MO
Webster Groves, MO
Ballwin, MO
Manchester, MO
Wildwood, MO
and surrounding areas
(314) 916-6533

Why choose Claro?

everywhere
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Complete mold remediation

Most remediation companies simply scrub or remove walls and call it done. Claro fixes the moisture source first, removes contaminated materials, and finishes with our dry fog to treat every surface and air space including walls, HVAC systems, and hidden spaces, without demolition or downtime.
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Proven and trusted across St. Louis

With some of the highest mold allergen levels in the Midwest, St. Louis homes need specialized care. From mold inspections and testing, to water damage cleanup and mold remediation, our team can come up with a plan that's right for you and your family.
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Your health is our priority

Claro was designed around one goal: restoring the health of your home and the people inside it. Rather than treating only visible mold, our whole-home approach addresses airborne spores and hidden contamination, stopping mold from spreading and restoring indoor air quality throughout the home.

1,000s of life-changing stories

Dave who owns and runs Claro is the most amazing person. I called him as I was struggling with sinus issues and migraines. He tested many areas in our house. He has helped us endlessly to resolve our problems. Thanks Dave for your kindness and intelligence and your care and concern. You are the BEST!!

Candace C

St. Louis, MO
I had a great experience with Claro St. Louis. Their team was professional, thorough, and explained everything clearly. I’m really grateful for the quality of their work and highly recommend them to anyone dealing with mold issues!

Monica A

St. Louis, MO
I can’t say enough good things about Claro! The team is patient, knowledgeable, and genuinely invested in helping me understand everything. They managed to come out the SAME day I called, completed air testing on the spot, and I had official independent lab results back within just a few days. Absolutely recommend!

Amy B

Kirkwood, MO
We’d noticed a faint mildew smell around the HVAC vents and weren’t sure if it was worth digging into. Dave at Claro told me about their “test first, treat only if needed” approach — no pressure, just honesty. They ran the air test, found elevated spores, then scheduled fog treatment. A few hours later we were done. The smell disappeared within a day!

Grant S

St. Charles, MO
The first of its kind here in town. So great to have a safe mold remediation option in STL. There is nothing better you can do for the health of your family than making sure your house is mold-free! They offer mold inspections and make it easy.

Margaret H

Brentwood, MO
Basement had damp patches after a rain leak last summer. We cleaned it up, but the air still felt stale with patches of visible mold. Called Claro. Dave came, tested the air, confirmed elevated spores, but said fogging only makes sense once the leak was fixed — which it was. They treated the house the next afternoon, re-tested — and everything was clean. No drama, no mess. Just a safe, fresh home.

Michael B

St. Louis, MO
I lean toward skepticism when I hear about "one-day mold fixes," but Claro proved me wrong. Dave was honest about what could and couldn't be done. They tested the air, confirmed there was an issue, then fogged the house in one afternoon. By the next day air tests were clear and the stale odor was history. House feels cleaner, fresher -- I sleep better now.

Joe P

St. Louis, MO
Dave who owns and runs Claro is the most amazing person. I called him as I was struggling with sinus issues and migraines. He tested many areas in our house. He has helped us endlessly to resolve our problems. Thanks Dave for your kindness and intelligence and your care and concern. You are the BEST!!

Candace C

St. Louis, MO
I had a great experience with Claro St. Louis. Their team was professional, thorough, and explained everything clearly. I’m really grateful for the quality of their work and highly recommend them to anyone dealing with mold issues!

Monica A

St. Louis, MO
I can’t say enough good things about Claro! The team is patient, knowledgeable, and genuinely invested in helping me understand everything. They managed to come out the SAME day I called, completed air testing on the spot, and I had official independent lab results back within just a few days. Absolutely recommend!

Amy B

Kirkwood, MO
We’d noticed a faint mildew smell around the HVAC vents and weren’t sure if it was worth digging into. Dave at Claro told me about their “test first, treat only if needed” approach — no pressure, just honesty. They ran the air test, found elevated spores, then scheduled fog treatment. A few hours later we were done. The smell disappeared within a day!

Grant S

St. Charles, MO
The first of its kind here in town. So great to have a safe mold remediation option in STL. There is nothing better you can do for the health of your family than making sure your house is mold-free! They offer mold inspections and make it easy.

Margaret H

Brentwood, MO
Basement had damp patches after a rain leak last summer. We cleaned it up, but the air still felt stale with patches of visible mold. Called Claro. Dave came, tested the air, confirmed elevated spores, but said fogging only makes sense once the leak was fixed — which it was. They treated the house the next afternoon, re-tested — and everything was clean. No drama, no mess. Just a safe, fresh home.

Michael B

St. Louis, MO
I lean toward skepticism when I hear about "one-day mold fixes," but Claro proved me wrong. Dave was honest about what could and couldn't be done. They tested the air, confirmed there was an issue, then fogged the house in one afternoon. By the next day air tests were clear and the stale odor was history. House feels cleaner, fresher -- I sleep better now.

Joe P

St. Louis, MO
Great customer care and service, when you call this company, you will be speaking to the owner. in today's world where there is no customer care any longer these guys rank a 10 out of 10. I cannot say enough about them. Highly recommended.

Bryan G

Franklin, TN
After the treatment, our family’s mold-related illnesses got better and air quality tests came back great!

Thomas D

Nashville, TN