Mosquito Control Inspector Checking for mosquito larvae 

Palm Beach County's warm tropical air and above average rain fall create the perfect environment for insects to multiply. ERM's Mosquito Control staff work hard to enhance the health and quality of life by reducing mosquito populations. Staff use chemical treatment, hormonal and bacterial larvaciding, and biological control methods. Working closely with other agencies like the Health Department, our staff act as first responders to mosquito-borne disease outbreaks as well as coordinate day to day interactions with residents on how to prevent mosquitoes from breeding in their backyard.

Mosquito Control Inspector Fogging

Palm Beach County uses the following industry-standard products approved for use in the United States to combat mosquitoes at different phases of their lifecycle:

  • Basillus thuringiensis israelensis
    This biological congtrol is a natural pathogen of mosquito larvae, is sprayed by ground devices in public right of ways such as grassy swales, subdivision drains, roadside drains, and flood channels.
  • Naled
    This insecticide is used in concentrations lower than the labeled amount and sprayed by aircraft using ultra-low volume spray equipment to kill adult mosquitoes.
  • Synthetic pyrethroid
    This organic compound is similar to the natural pyrethrins produced by the flowers of chrysanthemum flowers and sprayed by ground devices to kill adult mosquitoes. 
Mosquito Control Ground Spraying Operation via Truck
1. Where is aerial spraying done?
Aerial spraying is conducted in western portions of Palm Beach County west of Military Trail where mosquito populations are most prevalent in wet environments and for mosquitoes that are most active at dusk.
2. When is aerial spraying done?
Aerial spraying is done at night when most mosquitoes are most active, when air temperature is lowest allowing spray droplets to reach close to the ground where mosquitoes are flying, and when honey bees are back in their hives.
4. How do I know when aerial spraying will be conducted?
Palm Beach County issues press releases to local media prior to conducting aerial spraying. In addition, there is an Air Spray Hotline at (561) 642-8775 with up to date information. As a public service, advanced notification for chemically sensitive individuals can be provided with documentation from a physician.


Mosquitoes that carry the Zika virus are day flying container mosquitoes. They are most active during
the day (NOT at dusk) and breed in containers of standing water making aerial spraying less effective.
Permanone 30-30 is sprayed in areas where mosquitoes that carry Zika are suspected using hand-held
foggers. However, the best way to rid these day flying container mosquitoes is to remove standing water that is collecting in containers around your house so that they no longer have a place to breed.


Petri Dish with  Different Species of Mosquitoes Found in Palm Beach County

There are over 3,000 species of mosquito world-wide. They ALL depend on a source of water to complete their lifecycle.

 Rid the wigglers!

Remove standing water. (old tires, gutters, flat roofs, buckets, drums, other containers)

Cover open containers tightly with a lid or with 16-mesh screen.

Empty plastic wading pools weekly, store indoors when not in use.

Store boats covered or upside down.

Fill in tree holes and hollow stumps that hold water.

Treat bromeliads and other vegetation that hold water with products containing the bacteria Bacillus thuringiensis, var. israelensis.

Stock your ornamental water garden with mosquito-eating fish (e.g. minnows, Gambusia spp., goldfish, or guppies).

Repair screening on windows, doors, porches, and patios.