Director: David Fiess, MPA Phone: (260) 449-7459 FAX: (260) 449-7460 Email:
Location: 2242 Carroll Rd, Fort Wayne, IN 46818 Hours: 8 a.m. to 12 p.m. and 1 to 4:30 p.m., Monday - Friday
Meet the Staff: Josh Blauvelt, BS, CHHS, Asst. Director; Tom McCue, BS, Env. Health Specialist II; Francis Koch, Env.Technician; Trina Riecke, Lead Case Manager; Cindy Wable, Lead Case Coordinator/Env. Technician; Pat De Haven, Secretary Seasonal Mosquito Technicians

Mosquitoes - Prevention & Control


All mosquitoes require standing water (at a minimum of 1/4 inches deep) for the first three stages of development.  Consequently, the elimination of any vessel capable of holding water for extended periods of time is essential.

  • Check your property for breeding sites.  Report any standing water to the Vector Control and Environmental Services Division.
  • Clean out leaves and debris from clogged gutters.
  • Do not allow tires to accumulate outside.
  • Flush out birdbaths once a week.  Empty or turn over wading pools when not in use.
  • Dispose of containers, trays, and can that can hold water.
  • Fill in tree holes with sand, gravel, cement or paintable foam.
  • Cover or store canoes and boats upside down.
  • Maintain backyard swimming pools and spas to discourage the development of mosquitoes.  If not going to use the pool, then place a cover over the pool and pitch it in the middle so the cover will not collect leaves and rain water.
  • Aerate ornamental ponds and water gardens.  Contact the Vector Control and Environmental Services Division for mosquito-eating fish to place in the ponds.
  • Limit time spent outdoors during peak mosquito biting times.
  • Wear loose, light-colored, long sleeves and pants.
  • Use a repellant that contains DEET, picaridin, oil of lemon eucalyptus or IR3535.  Repellants can be used on children, 2 months and older, but check the label before applying.
  • Mix 2 tablespoons of malathion with a gallon of water.  Spray this under bushes and high weeds.  The mixture will kill adult mosquitoes resting on leaves and branches.  There are also other barrier sprays that can be used.
  • Purchase a hand-fogger to use when working outside or having a backyard party.

Prevention & Control Information

Repellant Information

Biological Control

Biological control requires introducing a natural predator into the habitat of the mosquito.  Dragonflies, praying mantids, bats, and purple martins have been promoted as natural controls, but have not shown the ability to significantly reduce mosquito populations.

Gambusia affinis, also known as "mosquitofish", is a top-feeding guppie that offers excellant control of larvae and pupae in ornamental ponds and backyard garden pools.  These fish have upturned mouths and work along the surface, feeding on mosquito larvae and other small invertebrates.  They are somewhat tolerant of organic pollution and reproduce rapidly.

Since the fish will interfere with the life cycle of other aquatic organisms around them, certain restrictions apply as to where they can be used.  In general, they cannot be placed in an area, such as rivers, creeks, ditches, and lakes, where they will interfere with any Indiana game fish.

If you are interested in acquiring "mosquitofish" for your backyard pond, contact the Vector Control and Environmental Services Division.


Larval Control

The Division inspects and treats mosquito breeding sites identified by the public.  Employees also inspect and treat known permanent breeding sites throughout Allen County.  The products used to control the mosquitoes in the water are EPA-approved and environmentally-friendly.

Adult Control

When trapped adult mosquitoes are identified carrying a mosquito-borne virus, the Division may respond by spraying a half-mile radius area around the traps with an EPA-approved adulticide to reduce the numbers of mosquitoes that could be carrying the virus.  The spraying occurs at night, when the temperature is above 55° F, and the wind speed is between 1 to 10 miles per hour.

If you wish to receive an email notification whenever spraying is to occur, sign up here.

Sanitation/Code Enforcement

The Culex species, capable of transmitting West Nile virus, like to breed in tires, containers, and un-maintained swimming pools.  Aedes triseriatus, carrier of LaCrosse Encephalitis, prefers to breed in treeholes or containers.  Tenants and homeowners are provided with a warning to remove containers and tires or maintain their pools to prevent mosquito breeding.  If the violations are not resolved, then legal action will occur.

      Allen County Code Title 10 Article 12, Public Health Hazards (Effective 1/1/15)


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Photo Gallery

Click thumbnail to see large image.
  • Trina Riecke, Lead Case Manager, conducts a developmental assessment of a lead-poisoned child.
  • Lucky the Lead Free Lemur is a mascot of the Childhood Lead Poisoning Prevention Program.  He appears at health fairs and other events to promote lead prevention.
  • This engorged American Dog Tick was pulled off a human.  To prevent tick attachment, wear light-colored clothing, long pants with the bottoms placed into the top of socks, and apply a DEET-product to your clothing.  Check your clothing and body after exiting a high grass or wooded area.
  • De-rimmed tires breed mosquitoes and can provide drinking water for rats.  Culex species, ones that can carry WNv, and Ae. triseriatus, carrier of LaCrosse Encephalitis, use tires as a habitat when in the larval form.  The sun heats the black rubber allowing for increased mosquito production, even when it is cool out.  Tires should be properly disposed of or covered to prevent mosquito breeding.
  • A female Culex mosquito laying an egg raft, which can consist of 200-300 eggs.
  • A blood sample to be tested for lead is taken from a capillary in the tip of the finger.
  • Mold needs water to grow.  Remove the water source and there won't be a mold problem.
  • The American dog tick is the largest tick in Indiana and can carry Rocky Mountain Spotted Fever.
  • Children enjoy meeting Lucky the Lead Free Lemur.
  • Sticky traps are a great tool to catch cockroaches.
  • Trina Riecke educates a citizen about how to maintain a healthy and safe home.
  • Rats like to eat grease, as can be seen in the pan on the stove.
  • Educating the public on Vector-borne diseases is an on-going effort.
  • Ae. triseriatus, a carrier of LaCrosse Encephalitis, lays her eggs in treeholes and containers.
  • Mosquito larvae
  • Cockroach infestation in kitchen cabinet.
  • Mosquitofish can be placed into ornamental ponds to eat mosquito larvae.  The fish only get to be an inch in length.
  • Un-maintained swimming pools are perfect for breeding the mosquitoes that can carry West Nile virus.
  • Double whammy for mosquito breeding - uncovered boat with un-rimmed tire in it.
  • Notice the pop can the rats tried pulling into a burrow.
  • This rat ate poison bait stored in a secure station.
  • Bed bugs do not transmit diseases, but their bites can become infected if scratched too much.
  • Radon is the second leading cause of lung cancer. Free radon test kits are available at the Fort Wayne-Allen County Department of Health.
  • Ingredients taken from a meth lab that was found in a house.
Did You Know?

A rat has teeth harder than iron and several other metals.