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TRUSTED BY COMO, WI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon14
    Verified mold testing and remediation services reviews

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

Avatar for Gardner Services
Gardner Services
4.7(
17
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business+2 more

Serving Como, WI and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"This is a high quality mold/fungi/fungus testing company, with excellent customer service and follow-up. The phones were picked up on the first call each time, and arranging for an appointment was very easy. They arrived on time, were efficient, informing, and friendly in their work, and brought commercial equipment to perform the test samples. The follow up phone call and email on the test results was good, and they provided a potential remediation plan for us to follow on the test results. The third party lab utilized by them had easy to understand numbers, graphs, and descriptions of what was tested. We will do business with Gardner Services again in the near future, and will recommend them to others."
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+18

Response time7 hrs
Response rate100%
12 neighbors recently requested a quote
Avatar for Environmental Cleaning and Restoration Services
Environmental Cleaning and Restoration Services
4.7(
11
)
Mold & Toxic Material TestToxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Como, WI and surrounding areas

Approved

In business since 1991

Emergency services offered

Credit card accepted

"Best description? Superior work. Thoughtful interaction and patience with the many questions. This was my first experience with work of this nature. Bo, the manager, could not have been more helpful. Alex and Ford worked endlessly to mitigate the mold and at the same time were informative and attentive to my questions. Excellence is the word that describes both their effort and the manner in which they took time to educate me on the remediation. Bo went out of his way to respond to both issues and questions."
Response time1 day
Response rate100%
Recommended by100%of homeowners
Avatar for Elite Indoor Air
Elite Indoor Air
4.9(
34
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Como, WI and surrounding areas

Approved

In business since 2020

Warranties offered

Small jobs welcome

"I can't say enough how wonderful Damian is and all the help he provided me. He is very patient and has a heart of gold. He provided a demo for me to use while I was undergoing water damage. He explained how the air testing works and his air quality machine is amazing. He went above and beyond to accommodate me, providing his vendors to help assist me in my remodeling process. He has just been amazing in this whole process. There simply isn't enough good people who care for their customers like he does. There needs to be more Damian's around. Thank you so much for your guidance and support you provided me. I am so grateful that Angi provided me your business. You are simply a great person who shows compassion in all you do."
Digital test
Air quality digital test before
Digital test after active pure treatment
Air quality test
Windo seal

+15

Response time8 hrs
Response rate97%
81 neighbors recently requested a quote
Avatar for Emerald Build Group
Emerald Build Group
5.0(
7
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business+2 more

Serving Como, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"I had an excellent experience working with this company for my basement and master bedroom renovations. Their team was professional, reliable, and highly skilled. The basement was transformed into a functional and modern space, while the master bedroom now feels like a luxurious retreat. They completed the work on time and within budget, paying attention to every detail to ensure the results exceeded my expectations. The communication throughout the process was clear and consistent, making the entire experience stress-free. I highly recommend them for anyone looking for top-quality construction and remodeling services!"
After Photos Condo
After Photos Condo
After Photos Condo
After Photos Condo
After Photos Condo

+68

Response time2 hrs
Response rate100%
1 neighbors recently requested a quote
Avatar for Gardner Environmental Services
Gardner Environmental Services
4.8(
265
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Como, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Emergency services offered

"Very timely and responsive regarding testing, identification and remediation. Process was completed within a few days. The cost estimates were accurate and reasonable. I highly recommend Gardner Environmental Services."
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+20

Response time5 hrs
11 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Bone Dry LLC
Bone Dry LLC
4.8(
45
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business+2 more

Serving Como, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Todd is extremely knowledgeable and thorough, reveals defects in remarkable detail yet without undue emphasis over the gravity or urgency to remediate those that do not warrant it, and has a winning personality that one might suppose might even qualify him for his own TV show on home inspections."
Bathroom Mold
Basement Mold Restoration
Basement Mold Restoration
Basement Mold Restoration
Basement Mold Restoration

+2

Response time7 hrs
4 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for DJK Environmental, LLC
DJK Environmental, LLC
4.0(
28
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Como, WI and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"We contacted this company based on the positive reviews. It seems as though that there aren't many companies who want to touch this type of work (so to speak). Or, if they do they are expensive. DJK wasn't much of an exception. They did respond rather quickly when I had first contacted them. They came out and inspected the suspected mold problem area in our bedroom. So finally about 3 weeks later, $1,330.00 and 2 hours of work AND for a 2' x 2' square hole cut out in our bedroom wall. And, they had sprayed a potent biocide chemical that hopefully killed our mold problem! They don't do any mold air quality testing at all. Hence, a lab is involved. DJK will come out in advance and use a moisture meter that is supposed to detect where the moisture sits. Then they zero in on the behind the walled suspect area. That problem was caused by another painting contractor who supposedly did caulk around our windows! Apparently not. Otherwise water wouldn't have seeped in and caused this issue. Oh well, another review and problem for another day. We think it's now gone. And we'll be happier for that part. They charge extra to repair the plaster wall with a drywall (NOT plaster). You'll have to hire someone else to do plaster repair if that is what you want. Don't forget about replacing the possibly contaminated wall insulation that they may take out and dispose of. Then figure either priming and painting it yourself after the plaster has cured. Or, hiring yet another darned contractor. In short, I think DJK does the job ok, but they ain't cheap. We will see."
5 neighbors recently requested a quote
Recommended by78%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

The most common sign of a carbon monoxide leak is the visible black soot marks on the walls near your wood stove. An excess accumulation of smoke in other rooms of your home could also indicate that your wood burning stove is leaking carbon monoxide. If you notice either of these signs or are still unsure, it’s best to leave the premises and contact your fire department to check your home’s levels. 

Common causes include water leaks, settling, and impact. Address underlying issues to prevent recurring damage.

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.

Hazardous waste is waste that poses a threat to human or environmental health. This generally refers to waste that is flammable, corrosive, toxic, or reactive. To confirm if the waste you need to remove is considered hazardous waste, contact your local hazardous waste facility.

Bad odors and actual, visible mold aren’t the only ways to tell if your floorboards are suffering from too much moisture. Everything from high humidity to direct contact with water can cause wood to buckle, warp, peel, and discolor. Spotting one or more of these signs could be a clue that you’re dealing with mold. 

The Como, WI 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.