Adulticiding Tips:

  • Post reflective markers signifying which homes are designated as no spray zones.
  • Employ variable flow technology to your existing spray equipment-stay on label rate for maximum efficacy, to save precious time and budget dollars.
  • Rotate the active ingredient (change product classes), during the season or few years, to help avoid chemical resistance in areas inhabited by mosquitoes prone to this issue.
  • After yearly fogger calibration has been preformed, use a locking nut to secure pump flow rate adjustment knob. For added security keep pump box locked at all times.
  • Use today’s technology to set up an automated text message notification system informing residents when fogging will occur in their neighborhood.
  • To protect the few adulticides currently, apply organophosphates or natural pyrethrum by air and synthetic pyrethoids by ground.

Larviciding Tips:

  • Spider webs in corners or around storm drains and catch basins are a good indicator that breeding may be occurring in the water below.
  • Catch basins and storm drains can produce huge Culex numbers. Pre-treatment with briquettes can reduce breeding for months.
  • A quick, simple way to apply Bti at an effective rate is one granule per square foot – imagine a tile floor and one granule per square. Great for fresh water treatment sites and wood land pools.
  • To calibrate a granular applicator, attach a nylon stocking to the outlet, catch the granules for a measured period of time, and weigh with a digital fish scale to determine application rate per time period.
  • Google earth, a free satellite imagery program, can be a very effective tool for finding and measuring potential breeding sites prior to onsite inspections. To download visit:
  • To improve canopy penetration when using liquid larvicides, you can increase the dilution rate up to 10-fold to ensure more active ingredient reaches the water surface: if you are normally applying 1 qt of liquid Bti/acre in 10 gallons of water per acre, you can try to improve penetration by increase to 1 qt of Bti liquid in 100 gallons of water per acre.