How is Pursuit 4-4 ULV used in mosquito control?
A mosquito goes through four distinct stages during its life cycle: egg, larva, pupa and adult (imago). Pursuit 4-4 ULV is an adulticide, which means that it affects mosquitoes in the adult life cycle only. Mosquito control programs typically apply Pursuit 4-4 ULV by use of an aerosol sprayer, and St. Charles County utilizes a truck-mounted method fashioned with an ultra-low volume (ULV) sprayer. We choose to apply this treatment during the late evening/night hours, when mosquitoes are most active. ULV sprayers dispense very fine aerosol droplets that contain small quantities of active pesticide ingredients that stay aloft and eliminate mosquitoes on contact. The application area extends almost 300 square feet — so even though spraying may be done from the street; it is designed to reach backyard areas.

St. Charles County began using Pursuit 4-4 ULV for insect treatment in 2015.

Show All Answers

1. What is the primary goal of the mosquito control program?
2. What method does St. Charles County use to treat mosquitoes?
3. How is Pursuit 4-4 ULV used in mosquito control?
4. What is Aquabac 200G, and how is it used in mosquito control?
5. Does Pursuit 4-4 ULV pose a risk to human health?
6. What can I do as a resident to help control mosquitoes in my community?