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Top-Rated Mold testing and remediation specialists in Beloit - 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 Beloit, WI and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"David, at Gardner Environmental Services, professionally performed numerous air sample tests inside our home due to a minor smelling of mold in one spot.Fortunately, his lab resource came back with negative results on each location sample David tested. David was reassuring and pleasant to work with. I would recommend his company, to anyone."
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+18

Response time7 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for DJK Environmental, LLC
DJK Environmental, LLC
4.0(
28
)
Toxicity and Mold - RemovalToxicity and Mold - Removal - For Business

Serving Beloit, 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
Avatar for Property Services & Inspections, LLC
Property Services & Inspections, LLC
5.0(
2
)
Mold & Toxic Material TestIndoor Air Quality Testing

Serving Beloit, WI and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

Property Services & Inspections, LLC is Wisconsin's trusted source for professional home inspection and environmental testing services. We help homeowners, buyers, sellers, and real estate professionals make informed decisions with thorough, unbiased inspections and accurate reporting.\n\nOur services include complete home inspections, indoor air quality testing, mold testing and radon gas testing. We use industry-standard methods and advanced equipment to identify potential issues affecting your properties safety, health, and value.\n\nAt Property Services & Inspections, LLC, we are committed to honesty, attention to detail, and exceptional customer service. Whether you're purchasing a new home, preparing to sell, or addressing concerns about air quality, mold, or radon, we provide the information and solutions you need for peace of mind.\n\nProudly serving southeastern Wisconsin and surrounding communities with reliable inspections and environmental services you can trust.

AI image of Chris
Roof Inspection
Late 2025 HI
3 neighbors recently requested a quote
Avatar for Healthy Home Mold Services Inc
Healthy Home Mold Services Inc
5.0(
6
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business+2 more

Serving Beloit, WI and surrounding areas

In business since 2008

Emergency services offered

Warranties offered

"Fantastic! Highly recommended Tony and the team. Had a home inspection uncover basement "mold" issue. Had quote which seemed very high and included work that seemed unnecessary from another vendor for ~$3K. Healthy Home came out and quickly concluded there was NO mold but did offer to do a test for $250-$300 that would confirm this (if needed) or for peace of mind. They admitted the test would confirm what they were saying- mold was not present on the fiberglass insulation under the plastic. it was simply dirt and replacing the dirty insulation would take care of the black appearance. There was no danger and no mold. TONY you are fantastic, honest and dependable and you saved a senior citizen from spending $3K unnecessarily. It's great to see there are still dependable honest vendors out there! Call them for a FAIR and HONEST bid on your work."
Recommended by80%of homeowners
Avatar for WI MAIDS
WI MAIDS
4.5(
11
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Beloit, WI and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"I needed someone to test for mold as I had been diagnosed with a pulmonary mold disorder. When they arrived they immediately showed expertise in these matters and were concerned about my overall health and the state of my home. As it turns out one of my biggest issues was dust. To get better and be in remission so to speak the dust has to be reduced in my home first. They stated it would not pass a mold test right now there was no need to test and I needed a special cleaning. If I had the money I would have used them. I ended up getting some family together to get the job done as the price was out of my budget. However, if you have a mold or allergy issue, or any water damage at all I would not hesitate to call this company they care about you, your home, and your health. Thank You, Brandon and Tom."
WI-Mold
WI-Mold
WI-Mold
WI-Mold
WI-Mold

+9

Response time7 hrs
Recommended by80%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

If you believe mold is hidden somewhere in your home, don’t delay inspecting it, as it can be dangerous, especially to people with breathing problems and allergies. While it’s possible to learn how to check for mold yourself, we advise most people to hire a professional mold inspector, who can look more thoroughly. You can also purchase mold test kits if you aren’t sure if your home has mold, but a true human inspector is still your best bet.

Rust in your bathtub occurs when iron in the water or on metal components in your tub are exposed to oxygen, but while it’s unsightly, it won’t make bathing dangerous. However, if the rust appears under or around your tub spout or shower head, it could indicate that you have high levels of iron in your water. Drinking water with small amounts of iron in it usually doesn’t pose a health risk, but you might want to consider installing a water softener. The presence of iron could indicate that you have hard water, which can create some plumbing issues.

Mildew is a type of mold that forms in areas of excessive moisture and poor ventilation. Although it commonly exists in household air, it can’t take hold and spread if a surface is clean and dry. Generally, if you have any mildew or mold issues, it’s because the humidity in either your house, room, cabinet, or cupboard is above 50 percent. Common areas where you’ll find mildew are around water sources, which is why it’s commonly found near showers and in kitchen sinks.

Yes, exposure to fiberglass insulation can cause harm to your skin and eyes. However, this typically refers to the fiberglass insulation that is mostly used in walls and attics. Fiberglass doors don’t pose risks for fiberglass exposure because they're fully encased in polymer cladding.

Mold grows in areas with humidity levels above 60%, but ideal conditions for mold growth occur when humidity is between 70% and 90%, especially in poorly ventilated areas. To prevent mold growth, aim to maintain indoor humidity levels between 30% and 50% using dehumidifiers, proper ventilation, and temperature control. Regularly check your home's humidity with a hygrometer to help you monitor and avoid conditions conducive to mold.

The Beloit, WI homeowners’ guide to mold testing and remediation services

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