Top-rated mold testing and remediation specialists.

Get matched with top mold testing and remediation specialists in Alton, MO

Enter your ZIP and get matched with up to 5 pros

Need a pro for your mold testing and remediation project in Alton, MO?

Select your specific project to find the pro for you.

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

*The Angi rating for Mold Testing And Remediation companies in Alton, 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 Alton, 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 December 06, 2025

Find Mold testing and remediation specialists in Alton

HASS Consulting LLC

5.00(
4
)
•Approved Pro

HASS Consulting LLC

5.00(
4
)
•Approved Pro
Customers say: Quick response
25 local quotes requested
2 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"I was extremely happy with the Quality Air Test that Mr Clark provided. It was reasonably priced and done effectively and efficiently… Results were received in a timely manner as he explained. He answered any questions I had and was professional and polite… I highly recommend HASS Consulting…"

Janece A on May 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"I was extremely happy with the Quality Air Test that Mr Clark provided. It was reasonably priced and done effectively and efficiently… Results were received in a timely manner as he explained. He answered any questions I had and was professional and polite… I highly recommend HASS Consulting…"

Janece A on May 2025

Pure Air Of The Ozarks

4.86(
7
)

Pure Air Of The Ozarks

4.86(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Our cutting-edge Dry Fog technology is the leading solution for homeowners and businesses alike, as it is widely used across many industries in eliminating mold. Mold is indiscriminate as to where and what types of facilities it affects. Our process was developed so that it can be applied anywhere and everywhere mold appears without requiring demolition, toxic chemicals, significant cost or down-time. Regular business hours are Monday through Friday from 8am to 5pm. Weekends and evenings can be arranged as needed by appointment.

"Rescheduled a few times but was kind and got the job done"

Shanna R on January 2024

Our cutting-edge Dry Fog technology is the leading solution for homeowners and businesses alike, as it is widely used across many industries in eliminating mold. Mold is indiscriminate as to where and what types of facilities it affects. Our process was developed so that it can be applied anywhere and everywhere mold appears without requiring demolition, toxic chemicals, significant cost or down-time. Regular business hours are Monday through Friday from 8am to 5pm. Weekends and evenings can be arranged as needed by appointment.

"Rescheduled a few times but was kind and got the job done"

Shanna R on January 2024

Precision Home Inspections

1.00(
1
)

Precision Home Inspections

1.00(
1
)
Emergency services offered

Home Inspections Energy Audits Air Quality Testing Radon Testing Mold Testing

"Ben Derrick did not do what he said he would do. His inspection la Jed coverage of laundry room and water heater. He lied 3 times to me. I would never ever recommend his service"

Robin C on November 2020

Home Inspections Energy Audits Air Quality Testing Radon Testing Mold Testing

"Ben Derrick did not do what he said he would do. His inspection la Jed coverage of laundry room and water heater. He lied 3 times to me. I would never ever recommend his service"

Robin C on November 2020

J&D Construction

No reviews yet

J&D Construction

No reviews yet
29 years of experience

Our mission is: * To perform for our customers the highest level of quality construction services at fair and market competitive prices. * To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes. * To maintain the highest levels of professionalism, integrity, honesty and fairness in our relationships with our suppliers, subcontractors, professional associates and customers. Our mission is: * To perform for our customers the highest level of quality construction services at fair and market competitive prices. * To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes. * To maintain the highest levels of professionalism, integrity, honesty and fairness in our relationships with our suppliers, subcontractors, professional associates and customers.

Our mission is: * To perform for our customers the highest level of quality construction services at fair and market competitive prices. * To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes. * To maintain the highest levels of professionalism, integrity, honesty and fairness in our relationships with our suppliers, subcontractors, professional associates and customers. Our mission is: * To perform for our customers the highest level of quality construction services at fair and market competitive prices. * To ensure the longevity of our company through repeat and referral business achieved by customer satisfaction in all areas including timeliness, attention to detail and service-minded attitudes. * To maintain the highest levels of professionalism, integrity, honesty and fairness in our relationships with our suppliers, subcontractors, professional associates and customers.

Inspector Gadget Building Inspectors

No reviews yet

Inspector Gadget Building Inspectors

No reviews yet
11 years of experience

Inspector Gadget Building Inspectors provide building inspection services for residential and commercial. InterNACHI certified and qualified to inspect for mold, WDO, pool & spa inspections, Mobile Home Inspections and many others. 417-252-3784

Inspector Gadget Building Inspectors provide building inspection services for residential and commercial. InterNACHI certified and qualified to inspect for mold, WDO, pool & spa inspections, Mobile Home Inspections and many others. 417-252-3784

ALM ENVIRONMENTAL SERVICES & CONST LLC

No reviews yet

ALM ENVIRONMENTAL SERVICES & CONST LLC

No reviews yet
17 years of experience

We are ALM ENVIRONMENTAL.We start are business in Feb 2008 .Our 14 yrs in experienced.We do asbestos,lead abatement,mold remediation,fire restoration and small demolition.(etc)Our goal is make sure our Customer are happy and satisfy means quality work.

We are ALM ENVIRONMENTAL.We start are business in Feb 2008 .Our 14 yrs in experienced.We do asbestos,lead abatement,mold remediation,fire restoration and small demolition.(etc)Our goal is make sure our Customer are happy and satisfy means quality work.

AuntieGen, Inc.

No reviews yet

AuntieGen, Inc.

No reviews yet
15 years of experience

The mission of AuntieGen Inc. is to create healthier living areas for our families, cure sick building syndrome for our students and employees by annihilating all infectious living and toxic organisms. We achieve this through our product that becomes Bio-degradable.

The mission of AuntieGen Inc. is to create healthier living areas for our families, cure sick building syndrome for our students and employees by annihilating all infectious living and toxic organisms. We achieve this through our product that becomes Bio-degradable.

Showing 1-10 of 22
Mold Testing and Remediation questions, answered by experts

Wood stain is not considered toxic after it dries. The solvents in wood stain are what give off volatile organic compounds (VOCs), which are toxic, but these dissolve as the product dries, leaving behind a non-toxic product. When working with wood stain, you should always wear a respirator and rubber gloves to protect yourself, but once it dries fully, it’s not toxic, according to the manufacturer’s instructions.

Some of the most common signs of sensitivity or illness from mold include congestion, eye irritation, difficulty breathing, and headaches. These symptoms may not lead to long-term health issues. However, some types of mold, like toxic black mold, can make you quite ill. You may experience respiratory issues, skin rashes, or neurological issues after exposure because of the toxicity. Infants, people with compromised immune systems, and older adults can suffer the most severe reactions.

Eliminating mold from wood permanently poses a challenge as the mold spores have the ability to deeply penetrate the porous wood surface. While surface mold can be effectively eradicated with proper cleaning and preventative measures, it's difficult to guarantee its non-recurrence under favorable conditions. To prevent mold from reappearing, it is important to identify and resolve the root cause of the moisture that triggered mold growth initially.

Ensuring appropriate ventilation and a dry environment, or consider applying protective finishes such as sealant, varnish, or paint to prevent future moisture penetration and mold growth. Consistently inspect and maintain the area to keep the wood free from mold in the long term.

Any unexplained smell in your house should be investigated. However, some home odors are "red flag" worrisome because they pose immediate health and safety risks. Odors should be taken seriously when accompanied by headaches, nausea, or lightheadedness. If you smell an egg-like aroma, this is probably natural gas. You should leave the home immediately, and  contact your gas company.  

Mold inspections cost anywhere from $300 to $1,025, depending on the type of mold, the extent of the area that requires testing, your location, and the accessibility of the affected area. A mold inspection is an important part of the overall process, helping determine the scope of the problem and understanding the best remediation method based on the type of mold discovered.

The Alton, 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.

See all articles

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"