Inspection & assessment
We inspect the attic to map the contamination, find nesting and droppings, and check the insulation and framing for damage and mold.
Bay Area Attic Decontamination · SPCB-Licensed · 13+ Years
Attic Decontamination in the San Francisco Bay Area
When rodents leave droppings, urine, and nesting behind, the health hazard is real. We remove the biohazard safely, clear contaminated insulation, and sanitize and deodorize — so your attic is clean and safe again.
Free attic inspectionSPCB-licensedBiohazard-safe removalFast turnaround
Free on-site estimate · No pressure · We come to you
Why It Matters
Rodent Contamination Is
a Health Hazard, Not Just a Mess
As rodent droppings and urine build up in an attic, the insulation becomes a haven for bacteria, mold, and mildew — and the allergens and airborne particles it sheds get pulled into the air your family breathes every time the HVAC runs. Studies have found detectable mouse allergen in the majority of U.S. homes, which is why decontamination is about your health, not just cleaning up a mess.
Attic decontamination goes further than a basic cleaning: we safely remove the droppings, nesting, and any contaminated insulation, then sanitize and disinfect to neutralize what rodents leave behind. It usually follows a rodent problem, so it pairs naturally with rodent control to stop the source and a full attic cleaning to finish the job.
- Removes a real biohazard, safely
- Cleaner, healthier indoor air
- Droppings, urine & nesting cleared out
- Contaminated insulation removed
- Mold and mildew addressed
- Sanitized, disinfected & deodorized
What's Involved
What Attic
Decontamination Involves
Decontamination is a health-focused job — it's about neutralizing what rodents leave behind, done safely with the right equipment.
Safe biohazard removal
Working in proper protective gear, we remove droppings, urine-soaked material, and nesting safely — not with a household vacuum.
Contaminated insulation removal
Insulation fouled by rodents can't be cleaned. We remove and haul it away so the contamination and the allergens go with it.
Mold identification & removal
We check the insulation, timber, and drywall for mold — discolored patches in black, gray, green, or white — and address what we find.
Sanitize & disinfect
We sanitize and disinfect the affected areas to neutralize the bacteria and disease-causing agents rodents leave behind.
Deodorize & prevent
We deodorize to clear lingering odors, and can rodent-proof the entry points so your attic doesn't get re-contaminated.
Do You Need It?
Signs Your Attic
Needs Decontamination
Contamination usually announces itself before you ever go up to look. If any of these sound familiar, get it inspected.
Droppings or nesting
Rodent droppings, urine stains, or shredded nesting material in the attic are the clearest sign decontamination is needed.
Foul or musty odors
Strange or musty smells drifting from your vents often trace back to rodent waste or contaminated insulation overhead.
Evidence of rodents
Scratching or scurrying noises, gnaw marks, or a past infestation mean there's likely contamination left behind to clear.
Mold or discoloration
Black, gray, green, or white patches on insulation, timber, or drywall point to mold that needs to be handled carefully.
Allergy or respiratory symptoms
Congestion, coughing, or irritated airways that ease when you leave the house can signal contaminants in the air.
After a rodent problem
Even after the rodents are gone, the droppings, urine, and allergens they left behind still need professional decontamination.
How We Work
Our Attic Decontamination Process, Step by Step
Safe decontamination is about containment and disposal as much as removal. Here's how we handle every job.
Free attic inspection
We assess the extent of the contamination, locate droppings, nesting, and mold, and confirm exactly what your attic needs.
Contain & protect
We work in protective gear and set up containment so the biohazard and dust don't spread into the rest of your home.
Remove waste & insulation
We safely remove droppings, urine-soaked material, nesting, and contaminated insulation — and haul it all away.
Sanitize & disinfect
We sanitize and disinfect the affected areas to neutralize bacteria and allergens, and address any mold we find.
Deodorize & seal
We deodorize to clear the smell at its source and can seal entry points so rodents don't re-contaminate the space.
Free attic inspectionSPCB-licensedBiohazard-safe & sanitized
Why Attic Pros
The Bay Area's Trusted
Attic Decontamination Team
For over 13 years, Bay Area homeowners and businesses have trusted us to decontaminate attics safely — because we handle the whole job with the right equipment, haul the contamination away, and stand behind our work.
- SPCB-licensed (Co. Reg. #9901) & CSLB Lic. #1022608
- Diamond Certified & Angi Super Service Award winner
- Independently reviewed — verified Google ratings
- Proper protective equipment & safe disposal
- Free, no-obligation attic inspection
- Local team with 13+ years in Bay Area attics
Real Customers, Real Results
Trusted by Bay Area Homeowners
4.8
★★★★★
Based on 1,900+ verified Google reviews — trusted for attic decontamination & home services across the Bay Area
Google Review
★★★★★
These guys are awesome. Super clear comms to schedule, then received an extremely thorough consultation. We eventually decided to go with them as other shops in the area didn't communicate as well as Attic Pros.
Pedro Kroeff
Google Review
★★★★★
Tom from Attic Pros was great to work with! He was friendly, professional, and thorough during the inspection. He clearly explained everything he found and answered all of my questions. The whole process was straightforward. Thank you, Tom!
Daria Baevski
Google Review
★★★★★
Finding out we had a rodent infestation for the first time was incredibly stressful, but Attic Pros made the entire process so much easier! Jeremy was very knowledgeable when help preparing the estimate and the work that needed to be done. Their team that came to perform the work—Nico Otten, Juan Rodriguez, and Antonio Lopez—were amazing from start to finish. Communication was fantastic right from the beginning. The crew was super fast, highly efficient, and left everything very clean after sanitizing our attic, crawl space, and garage. They definitely gave us total peace of mind. They were also able to finish in one day!!
Annie M
Google Review
★★★★★
Our small cottage has a very narrow attic entrance. Denis from Attic Pros was willing to try and was able to enter to clean, vacuum, and replace the old insulation. Very professional, access areas were well shielded and protected. Powerful vacuum and clean up well after themselves.
Morgan Yang
Google Review
★★★★★
Tom Best came to our house to give us an estimate on new insulation. He was on time, very thorough and provided a detailed very reasonable estimate within an hour of his visit. What more could you want?
B Kellar
Google Review
★★★★★
Samim great service my attic was left very clean meticulous. I am so happy with the work that him and his team did great service. I recommend them highly. I would give them a 10 if I could.
Darlene Galindo
QUESTIONS, ANSWERED
Frequently Asked Questions
Straight answers to the questions we hear most about attic decontamination, rodent contamination, and keeping your home healthy. Still unsure? Our team is happy to help.
Still have questions?
Talk to our team — we're here to help.
(800) 543-0382Yes — it's a genuine health hazard. Rodent droppings and urine carry bacteria and allergens, and as they build up in insulation they feed mold and mildew. Studies have found detectable mouse allergen in the majority of U.S. homes, and much of the air in your attic circulates into your living space, which is why professional decontamination matters for your health, not just cleanliness.
It's risky. Disturbing dried droppings and urine releases particles into the air, so the work should be done with proper protective equipment — a good respirator, gloves, and eye protection — and safe removal and sanitizing methods rather than a household vacuum. That's exactly what professional decontamination is set up to do safely.
Attic cleaning removes debris, droppings, and contaminated insulation and tidies the space. Decontamination goes further — it focuses on neutralizing the biohazard: sanitizing and disinfecting to kill the bacteria and address the allergens rodents leave behind. When there's been an infestation, the two are usually done together.
Yes. Insulation fouled by rodent droppings and urine can't be cleaned — it holds contaminants and loses its effectiveness. We remove and haul it away as part of the decontamination, and can install fresh insulation afterward if needed.
Yes. Decontamination clears what rodents left behind, but if they're still getting in, the mess comes back. We offer rodent control and rodent-proofing alongside decontamination, so we can remove the pests, seal the entry points, and clean and sanitize the attic as one coordinated job.
There's no fixed schedule, but it's worth having your attic checked at least once or twice a year so problems like a leak or an infestation are caught early — and any time you've had rodents, so the contamination they left is properly cleared.
Yes. Moisture from rodent activity or a leak often brings mold, which can grow on insulation, timber, and drywall. We look for discolored patches — black, gray, green, or white — and address the mold as part of the job.
Most residential decontaminations are completed in a single visit, often with a fast turnaround. Timing depends on the size of the attic and how much contamination and insulation needs to come out. We'll give you a clear timeline after the free inspection.
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Serving the Greater Bay Area & Sacramento Area
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Book Your Free Attic Inspection
Tell us what you're seeing or smelling and we'll inspect your attic, assess the contamination, and lay out a safe, clear decontamination plan — no pressure.