The short answer
Ask what product they apply and what's in it, whether it's approved for county roads if yours is one, who gets the permit and preps the road, and how it's applied. Then ask about licenses, insurance and warranty, who can vouch for them, and when they can come. Whoever you hire, me included, get the answers in writing.
On this page
Why ask at all
From the road, dust control looks simple. A truck sprays and the dust stops. The FHWA's practitioner handbook says the choice is harder than it looks. It counts more than 150 proprietary unpaved road additives sold in the United States, and it says road managers often lean on what suppliers and vendors tell them, which is often conflicting.1
The handbook adds that when a treatment fails, "the chemical treatments are usually incorrectly blamed for the poor performance, whereas the lack of knowledge/information leading to inappropriate choices is usually the culprit."1 So ask before you hire. The questions below come from that handbook's own list for vendors and from Jackson County's program rules. Under each one is how I answer it, after 20-plus years of doing this around Medford.
1. What product do you apply, and what is in it?
The FHWA handbook says to ask what the product is made of, what its properties are and which general category it fits. Then check those answers against the safety data sheet and the other technical information the supplier has to provide.1
My answer
One product, lignin sulfonate. It's a plant-derived by-product of wood pulping, in the organic non-petroleum group. Call or email me with product questions. There's more in what lignin sulfonate is.
2. Is the product approved for county roads?
This one only matters if your road is county-maintained. In Jackson County, products used under the dust abatement program "must be pre-approved by Jackson County Roads to meet minimum safety standards."2
My answer
Lignin sulfonate is one of the example products Jackson County names. If your road is a county road, call Jackson County Roads at (541) 774-8184 to ask how the program works on your stretch, or call me and we'll go through it. See the Jackson County program.
3. Who gets the right-of-way permit?
On a county road, the applicator does. Jackson County says anyone working in the county road right-of-way has to get a permit from Jackson County Roads first. The permit covers surface preparation, traffic control, signage, product application, cleanup and warranty.2 Ask any company who pulls it before you book.
My answer
On a Jackson County program road, the permit is the applicator's job, not yours. If we're the ones spraying, it's on us.
4. Who prepares the road?
Prep decides a lot of how it turns out. The USDA Forest Service guide lists repairing soft spots, crowning for drainage and grading out ruts and potholes as work to do before a dust palliative goes down.3 On a county-maintained gravel road in Jackson County, the county may grade the road first at no cost to the applicator or residents.2 On a private road, ask who's doing what.
My answer
We pre-wet every road with water before we spray. If your road needs grading or gravel first, call me and we'll talk it through. My prep guide covers the rest.
5. How is it applied?
The Forest Service guide says to "use a pressure distributor to uniformly distribute the dust suppressant."3 The FHWA handbook suggests asking whether a product gets sprayed on top or has to be mixed into the road.1 Ask how soon you can drive on it, too.
My answer
We set an appointment, pre-wet the road with water, then the truck sprays the lignin. You can drive on it right away, and it's fully dry in about two hours on a hot summer day.
6. What licenses and insurance do you carry?
Ask what licenses and insurance the company carries, and get the details in writing with the quote. If the work is for an agency, a road association or a business, find out what your own paperwork requires before you call around.
My answer
Ask me when you call.
7. What happens if it doesn't hold?
The FHWA handbook's vendor list asks whether the company offers a warranty, a performance guarantee or a fit-for-service certification. It also asks what counts as a success or a failure, and what the remedy is when it fails.1
On a Jackson County program road, the county is clear that this is between you and the applicator. "The applicator will handle any warranty claims you may make," it says. The county makes no guarantee that the program works, and it says the applicator, the weather, how the road gets used and the surface itself all decide how well and how long a treatment holds.2
My answer
Our treatment is built to last the season. Ask me about the terms for your road when you call, and get them in writing.
8. Who can vouch for you?
The handbook suggests asking for testimonials from other customers, and it goes further. Call some of those customers yourself and get their own take on the product, where it fell short and whether it was worth the money.1 Photos of real jobs help too.
9. When can you come?
Timing changes the result. The Forest Service guide advises putting it down right after the wet season, and warns that a treatment applied just before rain may wash away.3 Ask how far out the company is booking and what happens if rain is forecast for your date.
My answer
Call me, seven days a week, 8am to 6pm, at 541-613-0067. My timing guide covers the Rogue Valley's dry season.
One red flag
The FHWA handbook has one piece of advice I'd keep in your back pocket.1
"Never trust anyone who says their product will prevent potholes (because that's a road/shape drainage issue that no chemical treatment can solve!)."
Potholes and washboard are road work, meaning crown, drainage, gravel and grading. See road maintenance and washboarding. What moves a quote is in what sets the cost, and our driveway work is on gravel driveway dust control.
Questions people ask
What should I ask a dust control company before hiring?
Start with what product they apply and what's in it, and whether it's approved for county roads if yours is one. Then who gets the permit, who preps the road and how it gets applied. Also ask about licenses and insurance, the warranty or re-treat terms, who can vouch for them, and when they can come. Get the answers in writing.
Can I hire anyone to treat a Jackson County road?
Jackson County says yes, with conditions. Applicators need a permit from Jackson County Roads, and products must be pre-approved by Jackson County Roads to meet environmental standards. For how the program works on your road, call Jackson County Roads at (541) 774-8184.
Does the county guarantee a dust treatment on a county road?
No. Jackson County says it does not make any guarantee to the effectiveness of the dust abatement program, and that the applicator handles any warranty claims.
What is a red flag when comparing dust control companies?
Anyone who says their product will prevent potholes. The FHWA handbook says potholes are a road shape and drainage issue that no chemical treatment can solve.
Your road, your call
Questions this guide didn't answer?
Call and we'll talk your road through. Seven days a week, 8am to 6pm.
541-613-0067Sources
The public sources this guide quotes, read on October 24, 2026. What we say about the product we apply comes from the product, not from an independent test of our own.
- Federal Highway Administration Unpaved Road Dust Management: A Successful Practitioner’s Handbook, Chapter 5 (2013)
- Jackson County Roads Dust Abatement Program
- USDA Forest Service Dust Palliative Selection and Application Guide (1999)