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TRUSTED BY ARNOLD, MO HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon15
    Verified mold testing and remediation services reviews

Verified Reviews for Mold Testing And Remediation pros in Arnold, MO

*The Angi rating for Mold Testing And Remediation companies in Arnold, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Mold Testing And Remediation needs.

*The HomeAdvisor rating for Mold Testing And Remediation companies in Arnold, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Mold Testing And Remediation needs.

Last update on July 27, 2025

Top-Rated Mold testing and remediation specialists in Arnold - Updated Nov 2026

Avatar for Claro Complete Mold Remediation - St. Louis
Claro Complete Mold Remediation - St. Louis
4.8(
76
)
Toxicity and Mold - RemovalMold & Toxic Material Test - For BusinessToxicity and Mold - Removal - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

At Claro - Complete Mold Remediation - St. Louis, we believe a healthy home starts with the air you breathe. We help families and businesses find mold, fix it at the source, and feel at home again. We serve St. Louis, Clayton, Ladue, Kirkwood, Webster Groves, Creve Coeur, Chesterfield, Ballwin, St. Charles, O’Fallon and surrounding areas. Our services include mold inspection, lab-based mold and air testing with same-day assessments, whole-home and crawlspace mold remediation, water damage cleanup, and commercial mold remediation. \n\nEvery job follows a source-first process: containment, moisture correction, physical removal of contaminated materials, structural drying, and a whole-home dry fog treatment that reaches hidden spores in walls, vents and crawlspaces. We work directly with your insurance company and build every plan around your home and the people living in it.

Crawlspace Waterproofing
Crawlspace Waterproofing
Crawlspace Waterproofing
Crawlspace Waterproofing
4 neighbors recently requested a quote
Recommended by84%of homeowners
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Avatar for The Mold Consultant
The Mold Consultant
4.9(
22
)
Mold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2017

Emergency services offered

Small jobs welcome

"Steve was very prompt and courteous. He was also very knowledgeable. I would recommend him to anyone that has a mold problem,"
Response time6 hrs
Response rate97%
4 neighbors recently requested a quote
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Avatar for Mold One Missouri
Mold One Missouri
4.8(
21
)
Mold & Toxic Material TestToxicity and Mold - RemovalIndoor Air Quality Testing+2 more

Serving Arnold, MO and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Reviewed our mold area and gave us a comprehensive solution which we accepted"
Total Home sterilization
bedroom
bathroom drains
moisture intrusion
black mold

+4

Response time11 hrs
Response rate96%
101 neighbors recently requested a quote
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Avatar for Mold Test Company IL
Mold Test Company IL
3.8(
106
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2008

Emergency services offered

Small jobs welcome

"Overall was good for what the service is. The technician was a postal worker and home inspector. So mold test company appears to be brokers. Their pricing was competitive from other quotes I received but I honestly think it was pricey for time spent and what they do. But like I said the price was pretty standard from the companies I called, in my opinion. But the technician was attentive and knowledgeable, and friendly."
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection

+78

Response time1 day
267 neighbors recently requested a quote
Recommended by80%of homeowners
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Avatar for AC Environmental, Inc.
AC Environmental, Inc.
5.0(
14
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business+2 more

Serving Arnold, MO and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"They got in, got out and provided detailed results. Answered questions and very knowledgeable. Would definitely use again and highly recommend."
Additional Photos
Additional Photos
Additional Photos
Response time10 hrs
Response rate99%
Recommended by92%of homeowners
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Avatar for Mold Test Company MO
Mold Test Company MO
3.8(
83
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2008

Emergency services offered

Small jobs welcome

"Mr Henry Smith was on time, very professional at what he does he not only expained to me what was going on he made sure he answered all of my questions and concerns talking to him about my experience in my home he understood me he was able too show me areas around the outside of my home and pin point the possibility of how and,where the problems occurred I learned a lot mist of all always have my home tested before moving in this would savee and my love ones alot of health issues pain and suffering in the future I would highly recommend the mold testing company to any and everyone who needs assistance with mold it is so worth it thanks Mr Henry Smith and the molding company"
Mold Testing
Mold Testing
Mold Testing
Mold Testing
Mold Testing

+70

23 neighbors recently requested a quote
Recommended by82%of homeowners
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Avatar for Quacker's Waterproofing & Basement Repair, LLC
Quacker's Waterproofing & Basement Repair, LLC
4.7(
167
)
Mold & Toxic Material Test

Serving Arnold, MO and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"Quacker's made the entire process incredibly easy. From beginning to end, they were super informative, kind, quick to get the job done and reasonably priced. Thank you so much!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

5 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for MCC Cleaning & Restoration
MCC Cleaning & Restoration
4.4(
183
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"They did a good job and would hire again if needed. Also great communication."
Air Duct Cleaning
Air Duct Cleaning
Air Duct Cleaning
Air Duct Cleaning
Air Duct Cleaning

+22

Response time2 days
1 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Allied Environmental, LLC
Allied Environmental, LLC
5.0(
6
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Arnold, MO and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Tyfanie was professional and knowledgeable."
Exterior of Home
Interior
Interior of Building
Interior of Building
Commercial Building

+9

6 neighbors recently requested a quote
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Avatar for Scope Environmental
Scope Environmental
5.0(
15
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Arnold, MO and surrounding areas

In business since 2023

Free estimates

Small jobs welcome

"Jeff was great at explaining his tests and what he found."
Black mold inside closet
Mold growth in HVAC Closet
Asbestos Flooring
Floor sample collection
Asbestos Adhesive

+10

Response time4 hrs
Response rate96%
Recommended by73%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

Yes, mold can build up in a dehumidifier if not properly emptied and clean. Clean it every few weeks by removing dirty water, scrubbing with a mild dish soap, and allowing it to fully dry before reassembling. 

Many caulk alternatives are safe for use in kitchens and food preparation areas, provided you apply them correctly and let them cure for the right amount of time. If you’re unsure about this step, call in a pro to do it for you. Silicone putty and caulk strips are often used around sinks and countertops due to their waterproof and flexible nature. Always choose products labeled as safe for kitchen use and follow the manufacturer's instructions for proper application and curing.

If you see black stuff under your vinyl flooring, it’s probably mold. There is a chance it could just be dirt, dried-out adhesive, or slight water damage, but some of those are causes for mold growth, so you should remove it immediately anyway. In some older homes, it could be black mastic asbestos. If you think it could be this–you guessed it–call a pro.

When you smell something, it’s because the particles of what you are smelling are floating through the air. If you smell mold, it means that it’s airborne, and whether or not it’s harmful depends on the type of mold. It’s very hard to tell the difference between molds, even with the internet to guide you. Call a professional as soon as you see mold, they will test it, remove it, and make sure you aren’t breathing anything harmful.

While mold in the bathroom can appear black, it isn’t always the dangerous black mold strain Stachybotrys chartarum. This type of mold typically appears after a flood or a long-term leak. If you suspect black mold, you should get it tested by a local mold testing service to determine whether it’s safe to remove yourself.

The Arnold, 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.

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