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Top-Rated Toxicity and mold removers in Washington - Updated Nov 2026

Avatar for Claro Complete Mold Remediation - St. Louis
Claro Complete Mold Remediation - St. Louis
4.8(
76
)
Toxicity and Mold - Removal

Serving Washington, 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
Avatar for Mold One Missouri
Mold One Missouri
4.8(
21
)
Toxicity and Mold - Removal

Serving Washington, MO and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"The Mold One Missouri was very professional from the start to the end. They even came back to our house to redo a mold test in one of the rooms. All this happened September 2022."
Total Home sterilization
bedroom
bathroom drains
moisture intrusion
black mold

+4

Response time11 hrs
Response rate96%
98 neighbors recently requested a quote
Avatar for MCC Cleaning & Restoration
MCC Cleaning & Restoration
4.4(
183
)
Toxicity and Mold - Removal

Serving Washington, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Had water damage from basement flooding. They came in did their thing and cant even tell there was damage. Employees are very kind, finished on time and cleaned up their mess. High recommend!"
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
Nutech Restoration Services, LLC
4.3(
47
)
Toxicity and Mold - Removal

Serving Washington, MO and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"The best thing about my basement flooding was that Nutech made it very easy to get my basement and house back in order with very little time lost on my end. I would recommend them to anyone and Shawn (sales manager) is one of the best guys to work with in the business. He's honest, hardworking, and very easy to talk to and reach."
 Air Ducts Before
Air Ducts After
Recommended by77%of homeowners
Avatar for Stanton Restoration
Stanton Restoration
5.0(
3
)
Toxicity and Mold - Removal

Serving Washington, MO and surrounding areas

Free estimates

Credit card accepted

"I’ve used Blake on a couple of occasions. Once as part of a crew on a roofing job and more recently to take care of smoke and water damage following a small kitchen fire. He is punctual, hard working, and affordable. The kitchen job showcased his experience and skills with no hint of the original damage once he finished."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Recommended by100%of homeowners
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FAQs for toxicity and mold removal projects in Washington, MO

Remediation should keep mold from returning as long as the moisture source is eliminated. Fix leaks, control humidity, and replace water-damaged materials, then schedule periodic inspections to stay ahead of new growth. With those safeguards, your home can stay mold-free for the long haul while protecting both health and property value.

Most pros recommend leaving the home while they work on mold remediation. Removing mold stirs up airborne spores that can aggravate respiratory issues, and contractors can work more efficiently in an empty space. A short, temporary relocation keeps everyone in your family safe and lets the crew finish the job without interruption.

Mold shouldn’t return once the moisture problem is fixed. Stay vigilant: repair leaks right away, keep humidity below 50 percent with a dehumidifier placed in damp areas, and improve ventilation where needed. Routine checks for leaks and mold and quick repairs go a long way toward keeping your home mold-free.

Mold spores can trigger nasal congestion, throat irritation, coughing, wheezing, eye irritation, or skin rashes. People with asthma, allergies, or weakened immune systems often feel the effects sooner and more intensely. Some molds also release mycotoxins linked to serious respiratory or neurological issues. Swift remediation and better ventilation are the best defenses.

The Washington, MO homeowners’ guide to toxicity and mold removals

From average costs to expert advice, get all the answers you need to get your job done.