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Mission:  Protect the health and well-being of our public from disease and annoyance caused by mosquitoes while using environmentally  sensitive practices. 
Vision: Help lead the state of Colorado through effective and efficient mosquito treatment practices.
Motto:  It is impossible to eliminate mosquitoes, but we will always do our best to mitigate them. 
Red fog truck .jpg

The purpose of the Alamosa Mosquito Control District is to use economic and enviromentally responsible practices while suppressing larval and adult mosquito populations within The District's boundaries. We have created this website to provide general mosquito management information, our control strategies, and services we provide.  We invite you to navigate through this website and to contact us with any questions, comments or mosquito issues that are of concern. 


call in to listen to the "daily fog routes" to find out if a truck is expected in your area. 719-589-5409 ext. 1 

Office Hours:

Monday - Friday

9:00 am - 3:00 pm

(or by appointment)


 We are working in the Field Often. Don't hesitate to call before you stop to assure someone is at the office to assist you.



Board of Directors meeting:

Next Regular Board of Director Meeting:

January 24th, 2024 @ 6:00 p.m.



Meeting call in option is available.  If anyone would like to submit a Public Comment please email the District Manager at 

Meeting Call-In number:

(719) 496- 0999

Meeting Code: 123#

The 2023 Operational Season is winding down! 


Standing water which creates mosquito production & habitat for the most part drying up. With the sun starting to go down sooner & the evenings getting cooler, the overall mosquito population is dwindling within the District.

*Important News/Updates 

  • ​Larvicide Crew is slowing down. They continue to check and treat the smaller amounts of standing water that remain in the District. We will conclude larvicide activity the week of September 11th -15th 

  • Fog Truck Spraying: Done for the season. Our final night of spraying ended on September 1st. Fog truck spraying will begin again in 2024; probably around the end of May.  

  • Though mosquito populations have significantly decreased, and fog truck spraying is no longer warranted, WNV can possibly still be present in the few lingering mosquitoes (INSIDE or OUTSIDE OF OUR DISTRICT). Please take the proper precautions to protect yourself when outside during mosquito activity & avoid bites by wearing bug spray and/or long pants & sleeves .

  • We DO NOT have an aerial program this year. Our pilot retired in late December of 2022. It has been difficult finding a replacement. AMCD continues to search for a credentialed pilot and hope the program will continue next year.

Fog truck spraying routes: Call in M-F and listen to the Daily Fog Routes to know if the trucks will be in your area. 

  • Reminder: We cannot not operate the spray trucks if the wind is above 10 mph. 

  • Exact times of when the trucks will be spraying in your area cannot be provided. 

  • If the rural residents want their yards sprayed, please make sure that gates are open and vehicles are out of the way enough for the trucks to enter/exit.

Current Events:

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