Cache Mosquito Abatement District (CMAD)

West Nile Virus

As of September 30, there were 49 people and 27 horses confirmed as positive for West Nile Virus in Utah. Three people died due to WNV.

Mosquitoes that were trapped in Amalga, Benson, and Mendon on August 1st tested positive for West Nile Virus (WNV). Nibley had WNV-positive mosquitoes that were trapped on August 8th. On August 19th, Logan City mosquito abatement reported that WNV was confirmed in mosquitoes it had trapped. West Nile Virus has also been found in mosquitoes from Box Elder, Carbon, Davis, Duchesne, Salt Lake, Uintah, Utah, and Weber mosquito abatement districts.

Please be aware of the importance for personal protection when outside. The mosquitoes that carry WNV are active from dusk to dawn. Wear long sleeves and pants and use an approved mosquito repellent Also, drain any standing water to remove breeding habitat for the mosquitoes.


Abatement activities will end the evening of October 5. Please call (435) 764-6839 to report high mosquito numbers in your area.

We use GIS (Geographic Information System) to track where we find mosquito larva, what compound we use to treat the standing water, and to record the results when we check back (larval growth stopped, larva dead, etc.). All of our foggers are equpipped with a GPS chip to not only track our route but to also gather information on the application rate, speed of the vehicle, and to stop fogging when we reach those properties that have requested no spraying (fogging). The foggers are calibrated to deliver a consistent droplet size at various travel speeds up to 20 mph. All of our workers are licensed by UDAF (Utah Department of Agriculture and Food) to apply pesticides.

Courtesy No-Spray Requests

When possible, the District will try to honor courtesy no-spray requests. Please submit a request in writing in order for us to plan routes and accommodate no spray requests. Click here to read this policy. Click here to obtain the fillable form to complete and submit to CMAD. The request must be submitted EACH year.

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.

The District is divided into areas generally identified by the community each is around; these names are what appear in the fogging schedule.