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Types of Mosquitoes in Utah.

There are around 60 species of mosquitoes in Utah, each with unique biology, habits, and problems. Some of the most common and concerning varieties include:

  • Northern House Mosquitoes – Found statewide, these pests are known to breed in storm sewers, ground pools, and ditches. They mostly come out at night and may carry West Nile virus.
  • Asian tiger mosquitoes – Active during night and day, this type of mosquito likes to breed in containers like flowerpots and bird baths. These pests are found across the state and may carry chikungunya, La Crosse encephalitis, and potentially the Zika virus.
  • Eastern Saltmarsh Mosquitoes – These pests are found on the costal side of Utah and will bite any time a host is nearby. They breed in saltmarshes and may transmit eastern equine encephalitis.


Tips to Reduce Exposure Mosquito Bites and Illness

The Health Department wants residents and visitors of the area to follow the recommendation of NCDHHS to protect themselves from mosquito-borne diseases:

  • Avoid being outside without protection during the early dawn and twilight hours
  • Wear long-sleeved shirts and long pants while outdoors
  • Use mosquito repellent that contains DEET or an equivalent when outside and use caution when applying to children
  • Most mosquito complaints from homeowners can be traced to the Asian tiger mosquito (Aedes albopictus, pictured above), that is one of Utah’s worst mosquito pests. She has an aggressive biting habit. 
  • She is also the easiest mosquito to control. All mosquitoes need water to lay their eggs, and the Asian tiger mosquito prefers to lay its eggs inside containers that hold water. These can be man-made containers such as tires, tin cans, buckets, bird baths or clogged gutters. They will also lay eggs in natural containers, such as holes in trees or rocks. The best way to control this mosquito around homes and businesses is to get rid of containers that can hold water.
The best way to stop mosquitoes from breeding is to get rid of the water they breed in. You can help by:

Tipping and tossing standing water in:

  • pet bowls 
  • planters 
  • birdbaths 
  • buckets 
  • wading pools 
  • tire swings 
  • Throwing out empty bottles, cans, used tires and other garbage that water can collect in.
  • Turning over buckets, planters, wheelbarrows and wading pools when not in use.
  • Keeping your home repaired: 
  • Clean rain gutters so that water flows freely
  • Fix dripping hoses and faucets
  • Repair septic problems
  • Make sure water drains from ditches
  • Check sprinkler systems for standing water
  • Covering rain barrels with screens and seal openings around pipes, door screens, etc., with rubber gaskets or caulking.
  • Treating standing water.If you cannot drain standing water, treat it with a chemical larvicide such as Mosquito Dunks.These are put in standing water and work by not letting mosquito eggs hatch. You can buy them at your hardware or garden store. Follow the product label.
  • Buying pond fish. These are fish that eat a lot of insect eggs in ponds. You can buy them at pet stores. Be careful not to put these fish into water that drains into streams or rivers. They can harm other fish and wildlife.
  • Thinning shrubs and cutting down tall grass and weeds will also help reduce mosquitoes as they inhabit cool, shady areas to escape hot temperatures that can be deadly to mosquitoes. Mosquitos love English Ivy!
  • Adding a bat box. Bat boxes are homes for bats. One bat can eat up to 600 mosquitoes in one hour!

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