Sign up for text alerts.
Sprays run seasonally, usually starting in early June and wrapping up by October. Sign up for mosquito spray text alerts by texting SPRAY to 888-777.
Why we spray
The Mosquito Control Program limits harmful mosquitos that spread viruses like West Nile. South Dakota is the number one hotspot for West Nile in the United States.
Trucks spray low-concentration products in the air, reducing the number of harmful mosquitoes. This allows residents to safely enjoy the outdoors.
When we spray
The Mosquito Control Program monitors the population of harmful mosquitoes. Mosquitos are trapped and tested each weekday. We spray a zone or city-wide if enough harmful mosquitos are found.
To learn what zone you are in, use our Interactive Spray Zone Map. Sign up for text alerts so you know when we are spraying in your Zone.
We spray at night when the mosquitoes are out, unless it is too cool, too windy or raining. Recreational trails may be sprayed in the evening or morning hours, as mosquito activity is at its peak at dawn and dusk.
The products used in our sprays are specifically formulated for mosquito control purposes and have been proven to present low-risk to people, pets, and the environment. If you have a medical sensitivity or wish to avoid the trucks, please sign up for text alerts so that you can make personal decisions during our control efforts.
About the sprays
The Mosquito Control Program uses safe, industry-tested products. We use the smallest amount of chemicals necessary. The active ingredients are less than a fraction of a raindrop per square foot. The Environmental Protection Agency evaluates our sprays to ensure they do not pose a risk to our community.
If you have questions, read our FAQs or call our Mosquito Control Program at 605-367-8799.
Bike path spraying
The City of Sioux Falls Mosquito Control Program aims to spray the recreational trails 1-2 times a week throughout the summer, as weather conditions allow. These spray efforts will occur in the morning hours between 3-7 a.m.
Find your spray zone
Interactive Spray Zone Map