Cache Mosquito Abatement District (CMAD)


In our district, the Culex pipiens mosquito likes man-made water pools and carries West Nile virus.

Additional Resources

The policies adopted by the Board of Trustees may be found here.

WNV found in CMAD Mosquitoes

Mosquito pools from Wellsville, Mendon, Hyrum, and Benson (trapped on August 14th) tested positive for West Nile Virus. WNV was also confirmed in Logan and numerous areas throughout the state (Box Elder, Davis, Magna, Salt Lake area, Tooele, Uintah, and Weber). This is the peak period for WNV so please wear long-sleeved shirts and pants and use an approved insect repellant when outdoors between dusk and dawn when the Culex mosquitoes are active. Fight the Bite!

Updated Fogging Schedule: An additional night of fogging in Wellsville and Mendon begins Friday, August 24. Hyrum and Benson will continue to be fogged twice a week.

Horses are also at risk for WNV. There are approved vaccines for horses that are to be given in the spring before the mosquito population peaks. Check with your local veterinarian on the recommended vaccination schedule.

Symptoms that a horse infected with WNV may exhibit include lack of coordination and stumbling (most common), depression or apprehension, anorexia (off feed), weakness of the hind limbs, falling down, inability to rise, flaccid paralysis of the lower lip (droopy lip), muscle twitching, grinding teeth, inability to swallow, head pressing, colicky appearance, aimless wandering, hypersensitivity and excitability, excessive sweating, disorientation, convulsions, and possible total paralysis. Call your veterinarian immediately if you see these signs in your horse; prompt treatment may be life-saving. About two out of every three infected horses will survive and likely fully recover.

West Nile Virus (WNV)

West Nile Virus is a disease transmitted by the bite of Culex species of mosquito. The first human case in Utah for this season was confirmed August 16th in Utah county. The Utah Department of Health Bureau of Epidemiology provides information on WNV for the general public, media, medical personnel, and others. Click here for a fact sheet on WNV in Utah.

Mosquito Abatement

The CMAD (Cache Mosquito Abatement District) employees checking standing water for mosquito larva (baby mosquitoes) and, when found, are treating the water with products that target the larva. This is by far the most effective mosquito control. However, there are so many water sources especially around homes (such as pet water dishes, water remaining in gutters, etc.) that adult mosquitoes become prevalent in late May to early June.

Fogging throughout the District began June 11th due to the widespread activity of adult mosquitoes; click here for the schedule. Please call (435) 764-6839 to report mosquito problems.

Zika Virus

We provide this information as a public service. The CDC (Centers for Disease Control) has a dedicated site with current information on Zika travel alerts, precautions, latest research and more; please click here for more information.

District Information

If you live in Logan or College-Young Ward, please contact your local abatement personnel, NOT Cache Mosquito Abatement District, for fogging schedules, no spray requests, etc. In Logan, please contact Rex Davis at (435) 716-9749. For the College-Young Ward area, please contact Brad Tolman at (435) 755-5733. For River Heights or Paradise, please contact your local councils.


The Cache Mosquito Abatement District (CMAD) was approved by voters in 12 communities and the county unincorporated area on the November 2004 ballot. Since then, four more communities have requested (and been granted) annexation into the District. The College-Young Ward area and Logan City maintain their own mosquito abatement programs. For more on the history of Cache MAD, click here

Contact information for the Cache MAD can be found at the bottom of this page.