Iowa County

Residential Dust Control

When you spread LIQUIDOW™ Liquid Calcium Chloride on unpaved roads, a lot of problems clear up.

*LIQUIDDOW™ – Trademark of Occidental Chemical Corporation.

Dust control is not dust elimination.
Calcium Chloride attracts moisture, and this is what makes it an excellent dust control product. LIQUIDOW™ is produced from natural brine deposits found underground, so it is safe for the environment.

A dust control permit is REQUIRED by the county. Please visit to download the Dust Control Permit form. The permit request form and $10 must be mailed to the Iowa County Engineer’s office at PO. Box 144, Marengo, IA 52301, by May 6th, 2024, for the 1st application. Permits received after May 6th will be $30.00. We cannot apply dust control on Iowa County roads without the applicant having a permit. Binns & Stevens does NOT need a copy of the county permit.

Due to weather, road, and traffic conditions, two applications are recommended. A minimum length of 400 feet is REQUIRED.


Late applications will not get dust control until a later date.

Please have area to be treated clearly flagged and visible at each end for the ENTIRE season (May to October). If flags are not visible, drivers will use their own judgment for location. PLEASE NOTE: All spots will be measured. Any footage flagged over the amount ordered will be billed to the customer. If you are unsure of flag distance and do not want more than ordered, please indicate that on the application.

Dust Control Request Form

The deadline for application has passed. Please check with us regarding late applications.