Pure Maintenance Austin TeamQuick answer: Many dry fog companies outside Texas advertise mold removal, "kills 99.99%," disinfection, "EPA approved," "non-toxic," health benefits and 90-day protection. A few of those rest on a state mold license or a product label that allows them; many go further than any label allows. Pure Maintenance Austin says only what its product label supports.
This guide sorts the common claims by type, not by company, and explains where each one comes from. Some Texas sites use the same claims, too.
We're describing advertising in general, not judging any one business, and none of this is legal advice.
Why do fog companies make such different claims?
Three things decide what a fog company can truthfully say, and the state is only one of them:
- State mold law. Texas, New York and Florida license mold assessment and remediation, so who may sell and advertise mold work changes at the state line.
- The product's EPA label. A fog solution sold to control microorganisms counts as a pesticide under federal law, and its claims have to match its EPA label in every state.
- Marketing that outruns the label. Some claims aren't backed by any label we found, and that's a problem anywhere.
One surprise: the state rarely shows in the wording. Many licensee sites come from a few shared website templates, and sites in strict states usually just add a paragraph about local law.
Which claims will you see, and what backs them?
| Claim you'll see | Why some companies say it | Where it hits a limit |
|---|---|---|
| "Mold removal" or "demo-free mold remediation" | No state mold license where they work, or a state license for real remediation | In Texas, fogging to treat or prevent mold is licensed work at 25 contiguous sq ft and up; no fog label we found supports whole-home mold removal |
| "Mold-free guarantee" | The company's own before-and-after samples | Sampling is licensed assessment in Texas; one license holder can't assess and remediate the same project |
| "Kills 99.99%" | Some labels list kill rates for specific organisms | The number belongs to one product, its organism list and its directions; many sites quote numbers no label backs |
| "Disinfects your home" | A few fog products have fog disinfection directions | Most products disinfect only when surfaces stay wet for a set time, often 10 minutes |
| "EPA approved" | Confusion with EPA registration | EPA registers products; federal rules treat implied endorsement as misleading |
| "Non-toxic" or "safe for kids and pets" | Marketing shorthand | Federal labeling rules list "nontoxic" and "harmless" as misleading |
| Allergy or health relief | Customer stories and sales copy | No fogging label we found supports health claims |
| "Lab-verified results" | Air samples before and after | In Texas, mold sampling needs an assessment license at any size |
| "90 days of protection" | A few surface-finish products carry 90-day reapply directions | Those are wet-applied, for odor and staining growth, not germs, and not a dry fog |
Why do some companies say "mold removal" or "demo-free mold remediation"?
Usually because of where they work or which license they hold. In states without a mold license, nothing at the state level reserves the word. In New York and Florida, companies with a state remediation license do licensed remediation, including containment and tear-out, and can say so.
Texas's mold rules count "applying biocides or anti-microbial compounds" to prevent mold as remediation, so a fog sold to treat mold is licensed work once the mold covers 25 contiguous square feet or more. Labels set a ceiling of their own, too. One leading fog disinfectant's EPA label limits its mold claim to control "for aesthetic purposes only," by hand-held application, after visible mold has been removed.
Where do "mold-free guarantees" and "lab-verified results" come from?
From air or surface samples the company takes itself, before and after the job. Where a state has no mold license, nothing stops that. In Texas, taking any mold sample is mold assessment and needs a TDLR license at any size, and one license holder can't both assess and remediate the same project. New York keeps those roles apart too.
The logic is easy to follow: the person grading the work shouldn't be the person who did it.
Can a fog really "kill 99.99%" or "disinfect"?
Some can, on the right surfaces, with the right product. A few hydrogen peroxide fogging systems, sold with their own equipment, carry EPA labels with fog disinfection directions for pre-cleaned, hard, non-porous surfaces. Companies using them can lawfully say their fog disinfects those surfaces, and their percentages come from the organisms listed on that label.
Most other products allow disinfection only when a surface stays visibly wet for a set time, often 10 minutes. Fogging them doesn't earn the claim, and EPA says that unless a label includes disinfection directions for fogging, it does not recommend fogging that product. Even the strongest fog labels we read don't support "kills mold in your walls" or a mold-free home.
Why do "EPA approved" and "non-toxic" get companies in trouble?
Because federal rules treat both as misleading. EPA registers pesticide products; it doesn't approve or endorse anyone's service. The federal labeling rule at 40 CFR 156.10 lists safety claims such as "nontoxic" and "harmless," and statements implying government endorsement, as false or misleading.
Regulators, federal and state, have acted against fogging companies over claims like these, along with "EPA-verified" protection periods and virus claims. Several careful companies now say instead that their products are applied according to the EPA-registered label, which is the accurate version.
What about allergy relief and "90 days of protection"?
Allergy and health claims aren't supported by any fogging label we found. Products registered only for "non-public health" uses, such as odor, can't make germ or health claims at all.
"90 days" has a narrower story. A few registered surface finishes do carry reapply-every-90-days directions, but they go on until surfaces are thoroughly wet, and they cover growth that causes odor and staining, not germs. EPA has ordered a stop to "90 days" germ-protection claims that cleaning services made for a product registered only for non-public health uses.
What does Pure Maintenance Austin say, and why so little?
Two lines, both drawn from the product label. Our dry fog helps control the growth of odor-causing microorganisms on hard, non-porous surfaces, and it temporarily reduces airborne particulates as it settles. The fogging directions on the EPA-registered hydrogen peroxide and peracetic acid product we use support that odor claim and nothing broader, and moving to another state wouldn't add anything to it.
We don't do mold work, take samples or make health claims. What we do is a whole-home dry fog treatment, done in one day, with people and pets out for 4 hours. For heavy smoke and pet smells, our Odor Treatment adds an ozone step and keeps the house empty for up to 48 hours. Our guide to what's in the dry fog covers the chemistry.
Mold in your AC system or ductwork? Call Gold Eagle Services, a licensed Texas mold remediation company that handles HVAC mold, at 512-489-4653. For mold anywhere else in the home, contact an independent state-licensed mold assessor or remediation company.
How can you check a fog company's claims?
Five quick checks work on any company, including us:
- Ask for the EPA registration number of the product they fog, and look up its label on EPA's site.
- Read the fogging directions on that label and see what they actually claim.
- Look up any Texas company that offers mold work on TDLR's mold program pages.
- Ask who takes the samples when one company sells both testing and treatment.
- Read "EPA approved" or "non-toxic" as a warning sign, not a credential.
Common questions
Are companies that make bigger claims breaking the law?
Not necessarily. Some hold a state mold license, and some use a product whose label allows more. Others make claims no label we found supports. The label and the license are the two things to check.
Does "EPA registered" mean EPA approved the treatment?
No. Registration means EPA accepted the product's label for the uses written on it. It isn't an endorsement of a company, its service or claims beyond that label.
Is dry fog the same as ozone?
No. Dry fog is a very fine fog of a liquid solution that settles on surfaces; ozone is a gas a machine makes on site. Our guide comparing ozone, UV, hydroxyl and dry fog walks through the differences.
What should you do next?
- Find the label behind any claim before you weigh it.
- Send mold questions to a licensed assessor or remediator.
- Fix the source of a smell before any treatment.
- Book a free phone consultation if a smell lingers after the fix.
Get a free phone consultation
Book a free phone consultation. A Comfort Advisor will call you, learn what's going on in your home and send a written quote based on square footage. Pure Maintenance Austin, brought to you by Gold Eagle Services, serves all of Central Texas, including College Station, Round Rock, Georgetown, San Marcos, Bastrop and Marble Falls.
Call 512-904-4646 or email IAQ@goldeagleservices.com. We're open Monday through Saturday, 7am to 7pm.