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Verified Reviews for Biohazard Remediation pros in Millbrae, CA

*The Angi rating for Biohazard Remediation companies in Millbrae, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Biohazard Remediation needs.

*The HomeAdvisor rating for Biohazard Remediation companies in Millbrae, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Biohazard Remediation needs.

Last update on July 16, 2026

Find Biohazard remediation specialists in Millbrae

Avatar for Bio 911
Bio 911
5.0(
17
)
Mold & Toxic Material TestMold & Toxic Material Test - For BusinessToxicity and Mold - Removal

Serving Millbrae, CA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"We spent some time live with molds and we don’t know it was mold. We are trying 2 times to clean it out with some cleaning companies, but it was useless. Finally we got lucky with Bio 911- very professional, sharp, deeply attentive for details, even for our lifestyle depending on appearance of mold and compared with other not expensive. Thank you very much for Bio 911 and personally Kirill for outstanding work."
Mold contamination due to roof leak
Bird droppings contamination
Bird carcasses and bird droppings
Bird droppings contamination
Mold contamination due to roof leak

+29

Response time8 hrs
Response rate100%
Recommended by64%of homeowners
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Avatar for Mold Remedies
Mold Remedies
4.4(
30
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Millbrae, CA and surrounding areas

Approved

In business since 2002

Credit card accepted

Customers say: Super punctual

"Friendly and seemingly knowledgable. The lab results were the key for us."
Areas of concern
Dry Rot
Polluted Air
Clean air
We can make it happen

+15

Response time2 days
Response rate100%
3 neighbors recently requested a quote
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Avatar for WaveGuard Water Damage Restoration LLC
WaveGuard Water Damage Restoration LLC
5.0(
9
)
Mold & Toxic Material TestToxicity and Mold - Removal

Serving Millbrae, CA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"WaveGuard did an amazing job handling our water damage. They were super professional, got the containment setup quick, and made sure everything was 100% dry before wrapping up"
Water Damage
San Jose, CA 95125
Water Damage
San Jose, CA 95125
Water damage

+51

1 neighbors recently requested a quote
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Avatar for Environmental Science Services
Environmental Science Services
4.5(
42
)
Mold & Toxic Material TestIndoor Air Quality TestingToxic Lead - Testing+1 more

Serving Millbrae, CA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"Great customer service, quick turn around with results!"
interior
IAQ
Clandestine Laboratory Investigation
Wipe Testing for Asbestos
Water Intrusion Mold Testing

+3

Response time8 hrs
8 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Golden Team Builders
Golden Team Builders
5.0(
30
)
Mold & Toxic Material TestToxicity and Mold - Removal

Serving Millbrae, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Golden Team Builders is dedicated to providing our customers with the best quality and\ncraftsmanship. We are here to build relationships with our customers and communities and to provide\nour employees with a great place to work. We look forward to working with you!

1 neighbors recently requested a quote
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Avatar for Quality Air Environmental Consulting, LLC
Quality Air Environmental Consulting, LLC
4.9(
10
)
Mold & Toxic Material Test - For Business

Serving Millbrae, CA and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quality work

"After the review I received a message from Brad and he was extremely professional and thoroughly explained why I required more samples due to the different textures and materials on my wall. I really appreciated that!"
Asbestos Testing in skyscraper
Private Residence Floor Survey
Response time1 day
Recommended by100%of homeowners
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Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Hazardous Waste Removal

Serving Millbrae, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"Our landscaping in Menlo Park needed a complete refresh. The team replaced thirsty plants with drought-tolerant options that still provide plenty of color and curb appeal. We're using much less water without sacrificing appearance."
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.
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+1

Response time6 hrs
Recommended by17%of homeowners
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Avatar for Mold Test Company Central CA
Mold Test Company Central CA
4.0(
89
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Millbrae, CA and surrounding areas

Approved

In business since 2015

Emergency services offered

Small jobs welcome

"Jeremiah came out and tested the air and moisture and other items to determine if I had mold in my basement. After getting the test results there was evidence of mold and he recommended a company that provides a do it yourself kit for mold remediation. (Not cheap). After getting the items and realizing that there was more work, it would have been better for me to let my insurance company handle this as I do have coverage for mold/fungi. Though having a professional do the work is expensive, from what Jeremiah mentioned, it does not guarantee that the work will be complete or the source of the problem taken care of. He mentioned most companies will take care of the mold but not necessarily the cause of the mold. For this I would have to contact another company."
Attic Ceiling
Drywall
Drywall
Insulation
Insulation

+66

Response time10 hrs
182 neighbors recently requested a quote
Recommended by86%of homeowners
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Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Hazardous Waste Removal

Serving Millbrae, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I had my garden and bathroom remodel done. Albert and Samuel were professional, friendly, and a delight to work with. They're responsive and reliable. I also like the subcontractors whom they used on my project. They kept me informed of everything and I appreciate their excellent work."
Response time5 days
Recommended by77%of homeowners
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Showing 1-10 of 161
Biohazard Remediation questions, answered by experts

The time it takes to remove mold from under silicone caulk depends on the severity of the mold infestation and the cleaning method used. The cleaning process itself can take a few hours, including the time needed for cleaning agents to sit and work on the mold. If re-caulking is required, additional time will be needed for removing old caulk, applying new caulk, and allowing it to cure, which can take up to 24 hours.

Yes, a one-time water leak can cause mold. Depending on the conditions, mold can begin to grow within 12 to 48 hours. The risk increases with the severity of the leak, high humidity, and when water soaks into absorbent materials like drywall. To prevent mold growth, stop the leak immediately and ensure the area is dried completely; running a blower fan for 24 hours is recommended. If you do notice mold, it's best to call a mold removal specialist to address the situation.

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.

The primary difference is that black mold (Stachybotrys chartarum) is considered toxic and more dangerous than regular mold. It can produce harmful chemicals called mycotoxins, which may lead to severe health issues like respiratory problems, skin irritation, headaches, and other long-term complications. While regular mold is rarely toxic, it can still cause allergic reactions and respiratory irritation. Visually, black mold often appears dark—green, gray, brown, or black—with a fuzzy texture, whereas regular mold can be almost any color. Black mold is less common and typically grows in areas with severe water damage. Regardless of the type, you should not ignore any mold infestation in your home.

Mold removal will take between one and five days in most cases, but severe mold issues can take several weeks to correct. Your timeline will depend on how much mold there is in your home, where the mold is located, and how much testing and aftercare is required. If you have mold behind your walls or you have an excessive amount of mold that requires removal and running air scrubbers for several days, you could be looking at over a week for the process to be completed.

The Millbrae, CA homeowners’ guide to biohazard remediation services

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

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