Remove Standing Water!

A small amount of standing water will serve the purpose for mosquitoes to breed.  Mosquito eggs and larvae can develop in any amount of standing water....

West Nile Virus Stats

West Nile virus, 2016:

As of Oct 11, 2016, 101 human WNV cases have occurred in Illinois as follows: 66 Cook County, 9 DuPage County, 6 Will County, 1 Lake County (Ingleside), 19 counties fewer than 5 case including Lake County.

WNV Positive Mosquito, Bird, Horse or humans in 52 Illinois counties:

* 2338 WNV-positive mosquito samples

* 140 WNV-positive mosquito samples in Lake County

* 59 WNV-positive mosquito samples in SLMAD and surrounding forest preserve properties

* 8 Bannockburn; 17 Deerfield; 3 Ft. Sheridan; 21 Highland Park; 10 Riverwoods

West Nile Virus: September 2016

Southeast Lake County residents are at an elevated risk for human transmission of West Nile Virus (about half of the Culex mosquitoes are positive at this time).

The best way for residents to prevent West Nile disease or any other mosquito-borne illness is to reduce the number of mosquitoes around your home and to take personal precautions to avoid mosquito bites. Here are some suggestions:


  • Avoid being outdoors when mosquitoes are most active, especially between dusk and dawn.
  • When outdoors, apply insect repellent that includes DEET, picaridin or oil of lemon eucalyptus according to label instructions. Consult a physician before using repellents on infants.
  • Make sure doors and windows have tight-fitting screens. Repair or replace screens that have tears or other openings. Try to keep doors and windows shut, especially at night.
  • Eliminate all sources of standing water that can support mosquito breeding, including water in bird baths, ponds, flowerpots, wading pools, old tires and any other receptacles.
  • Report areas of stagnant water in roadside ditches, flooded yards and similar locations that may produce mosquitoes to the red "Contact Us" button on this web site, or call the hot line, 800-942-2555.


Welcome to the South Lake Mosquito Abatement District (SLMAD) Website.  Here you will find information about mosquitoes, the dangers they pose, and how to help prevent them.  If you have questions or comments regarding this website, please contact us.


  • Quick and Easy Repellant

    Click on the link below to read an article about a mosquito repellant that you probably already own!


    Stay safe everyone!


  • Does a West Nile Virus Vaccine Exist?

    There is no vaccine to protect against West Nile virus, and anti-viral medicines are ineffective.  The best way to keep from being infected is to avoid getting bitten by mosquitoes.  Current preventive measures in South Lake Mosquito Abatement District include frequent and on-going surveillance, larvaciding and adultciding.

    Preventive strategies include (click Read More below to see them):

  • Mosquito Control Methods

    This is a video from Clarke regarding Integrated Mosquito Management Service Program techniques.

    Dim lights Integrated Mosquito Management Service Program By Clarke
  • Biology

    Mosquito Egg Raft

    Mosquito Egg Raft

    Many mosquitoes, such as Culex quinquefasciatus, lay their eggs on the surface of fresh or stagnant water. The water may be in tin cans, barrels, horse troughs, ornamental ponds, swimming pools, puddles, creeks, ditches, catch basins or marshy areas. Mosquitoes prefer water sheltered from the wind by grass and weeds.

    Culex mosquitoes usually lay their eggs at night over a period of time sticking them together to form a raft of from 100 to 300 eggs. A raft of eggs looks like a speck of soot floating on the water and is about 1/4 inch long and 1/8 inch wide. A female mosquito may lay a raft of eggs every third night during its life span.

    Anopheles and many other mosquitoes lay their eggs singly on the water surface. Aedes and Ochlerotatus mosquitoes lay their eggs singly, usually on damp soil. Aedes and Ochlerotatus eggs are more resistant to drying out (some require complete drying out before the eggs will hatch) and hatch only when flooded with water (salt water high tides, irrigated pastures, treeholes flooded by rains, flooded stream bottoms). Anopheles , Culex and Mansonia eggs are susceptible to long periods of drying out.

    Tiny mosquito larvae (1st instar) emerge from the eggs within 24 - 48 hours almost in unison.

    Mosquito Larva

    Mosquito Larvae

    Mosquito larvae, commonly called "wigglers," live in water from 4 to 14 days depending on water temperature.

    Larvae must come to the surface at frequent intervals to obtain oxygen through a breathing tube called a siphon. They are constantly feeding since maturation requires a huge amount of energy and food. They hang with their heads down and the brushes by their mouths filtering anything small enough to be eaten toward their mouths to nourish the growing larvae. They feed on algae, plankton, fungi and bacteria and other microorganisms. They breath at the water surface with the breathing tube up breaking the water surface tension. One mosquito species larva feeds on larvae of other mosquitoes: Toxorhynchites, the largest mosquito known, are predators of other mosquito larvae sharing their habitat. Their larvae are much larger than other mosquito larvae.


  • Control


    Technician on bicycle - about to treat catchbasin

    Mosquito control can be divided into two areas of responsibility: individual and public. Most often it's performed following the Integrated Mosquito Management (IMM) concept. IMM is based on ecological, economic and social criteria and integrates multidisciplinary methodologies into pest management strategies that are practical and effective to protect public health and the environment and improve the quality of life. IMM strategies are employed in concert with insecticide. These include source reduction, which incorporates physical control (digging ditches and ponds in the target marsh) and biological control [placing live mosquito fish (Gambusia) in the ditches and ponds to eat mosquito larvae]. Other non-chemical control methods include invertebrate predators, parasites and diseases to control mosquito larvae. Adult mosquito biological control by means of birds, bats, dragonflies and frogs has been employed by various agencies. However, supportive data is anecdotal and there is no documented study to show that bats, purple martins, or other predators consume enough adult mosquitoes to be effective control agents.

    Pesticides may be applied to control larvae (larvicides) or adults (adulticides). Applications of adulticides or larvicides are made after the presence of mosquitoes has been demonstrated by surveillance procedures. Application is made by prescribed standards. All insecticides must have the name and amount of active ingredient (AI) appearing on the label; examples are DEET and pyrethroids. Check the label before buying. No pesticide is 100 percent safe and care must be exercised in the use of any pesticide. Material Safety Data Sheets (MSDS) contain basic information about a product intended to help you work safely with the material.

    Larval Control

    An efficient way to control mosquitoes is to find and eliminate their breeding sites. Eliminating large breeding areas (source reduction) such as swamps or sluggishly moving streams or ditches may require community-wide effort. This is usually a task for your organized mosquito control program. They might impound an area of water, establish ditches or canals or control the aquatic weeds (cattails, water lettuce, etc) on a body of water. The second method used by organized mosquito control agencies is larviciding. This utilizes the application of insecticides targeted at the immature mosquitoes - the larvae or pupae. These are applied to bodies of water harboring the larvae. However, since larvae do not usually occupy the entire body of water, larvicides are applied where the larvae are, usually the areas near the shoreline of the lake, stream or ditch. Larvicides differ from adulticides in that they are directed at a limited targeted area, i.e. the body of water and often only that area where the larvae grow and mature. Larvicides are classed as stomach toxins, contact larvicides, surface agents, natural agents and insect growth regulators (IGR). Some examples are listed in the Homeowner section that follows.

    Homeowners can take the following steps to prevent mosquito breeding on their own property:



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Latest Events

District Board Meeting

November 14, 2016

Category: Meetings

Official meeting of the Southlake Mosquito Abatement District board of commissioners.