Why can't mosquito control programs spray during the day?

It is not effective to spray during the day for several reasons. 

  • The primary reason is that the spray would be lifted away from the ground very quickly by the rising air currents that occur during hot days. At dusk and at night, the insecticide stays near the ground. 
  • The second reason is that most mosquitoes that bite during the day are breeding in containers or plants in the yard and are better controlled by eliminating the water in which they grow. Mosquito problems can be reduced by checking yards for containers, even very small ones that hold water. People should look for pet dishes, tin cans, flower pot holders, plugged gutters, tires, birdbaths, kiddy pools, toys, bromeliads, trash cans, etc. Water should be dumped every third day if the source is not eliminated. Containers that are too large to turn over should be covered. 
  • Daytime spraying is not practiced to avoid killing beneficial insects, particularly bees; to reduce people's and wildlife's exposure to the pesticide; and to eliminate the potential traffic hazard of a slow-moving vehicle during high traffic volume times. The mosquito control vehicle's slow-moving, flashing light and unique sound are easily seen and identified at night.

Show All Answers

1. What if I don’t want my property treated or sprayed?
2. Are mosquitoes attracted to some people more than others?
3. What purposes do mosquitoes serve?
4. What diseases do mosquitoes carry?
5. Do mosquitoes carry AIDS?
6. Are the chemicals harmful to people or pets?
7. Will DEET hurt children?
8. What is the best personal repellent?
9. How can one type of insect be controlled without hurting other insects or wildlife?
10. What is the best way to control mosquitoes?
11. How effective is the spray?
12. Why can't mosquito control programs spray during the day?
13. How do districts decide where to spray?
14. How long does the mosquito spray last?
15. What does Mosquito Control do and why?
16. How safe are the pesticides being used?
17. When do you spray?
18. Is it true that only certain mosquitoes bite and/or transmit disease?
19. Can I as a homeowner make a difference in the mosquito population in my area?
20. Can I spray my yard myself?
21. Why is it so important that I inspect my yard when ditches and woodland surround me?
22. When are the Commission Meetings held?