Far-northern California pairs a wet coastal climate with long rainy winters — persistent fog and marine moisture along the Humboldt and Del Norte coast, and heavy seasonal rain and snowmelt inland. That combination keeps crawl spaces, attics, and HVAC systems damp for much of the year, which is exactly the moisture mold needs to take hold.

The home needs to be vacant during treatment, so plan a place for you and your pets to be while we work. Your technician will give you a few basic instructions before arrival, like opening closets and closing windows. On the day of service, your technician will call and text ahead of arrival.

The time varies based on size and scope. Most homes are done in about 5 to 7 hours — everyone leaves the home during treatment and can come back in as soon as we're finished.

Costs vary with the unique circumstances that caused mold growth in your home. We tailor treatment to ensure the best results. Because our VaPURE process is non-invasive, it's often less expensive than traditional tear-out mold remediation.

VaPURE treatment is designed not to leave residue on typical belongings, including clothing and electronics — you shouldn't see visible residue once treatment is complete.

Most people leave wall art and paintings in place during VaPURE treatment. If you'd feel more comfortable, you can take down valuable pieces or cover them with a blanket beforehand.

To retain the fresh taste of your produce during treatment, we recommend placing food items in a zip-lock bag or the refrigerator beforehand.

It's true that traditional wet fogging doesn't work well against mold. Our process is different: the particles are dramatically smaller — half the size of a mold spore and at least one-tenth the size of a conventional fogging droplet. That lets the treatment stay airborne longer and reach micro-cracks and porous surfaces without wetting them.

Yes. In addition to a third-party lab verifying test results, the process has been studied by the Army Corps of Engineers and by Element Labs to verify its effectiveness.

Our treatment uses a very fine, roughly 7.5-micron particle — smaller than a typical mold spore, which ranges from about 12 to 30 microns. Wherever a mold spore can get in or out, the treatment can generally reach those same areas. In situations where mold is known to be behind a wall, we can make small holes between the studs to treat the back of the wall directly, then patch them afterward.

Leave as many personal belongings in the building as possible — mold spores can get trapped in fabrics, furniture, clothing, and mattresses, so those items benefit from treatment too. Let your technician know about any brass materials in the home so they can apply treatment accordingly.

No — pets and people need to be out of the building during treatment. Most homes are ready for everyone to return the same day, once the process is complete.

Yes. Your technician takes an air sample after treatment and sends it to an accredited third-party lab with no affiliation to any mold testing or remediation company, so the results are independently verified. You'll typically receive your results within about a week.

Yes. Mold tests are available; results typically take 3–5 business days, and rush requests can be arranged.

As long as there aren't new moisture or water-intrusion issues, VaPURE treatment helps resist mold regrowth for the long term. Ask us about re-treatment options if you have concerns down the road.

VaPURE treatment isn't registered as a pesticide, so we don't make claims about its effect on insects or other pests — our focus is mold.

Existing stains from mold growth won't disappear completely on their own, but we can clean them for a small additional cost, or you're welcome to handle it yourself after treatment.

For the most part, nothing. You may notice a lingering vinegar-like smell for a little while — that's the sterilant's active component breaking down into natural byproducts (acetic acid, the same as white vinegar, oxygen, and water) — so you may want to open windows and circulate the air.