April 2, 2013

The Skamania County Mosquito Control District has begun work on the 2013 mosquito season. The District will be actively performing mosquito control in District boundaries now until late September to mid October depending on weather conditions.

The District’s primary focus is to control mosquitoes when they are in the larval or pupal state using a larvicide product (we use BTI*).  Controlling mosquitoes when they are in the water is an effective approach because the mosquito is somewhat isolated and known breeding sites our recorded and routinely monitored.  Mosquito Larvicide applications are given top priority since this type of control is more selective and effective in reducing mosquito populations.  This type of mosquito control measure requires personnel, equipment, materials, planning, mosquito surveillance work and expense.  However, these types of applications offer the best long-term control for mosquitoes.

Information about ground fogging/spray activities will be posted as the season progresses.


Being aware of areas  mosquitoes like to breed can significantly reduce the mosquito population..   Please take a moment and review the items we have listed below, and then conduct an access of your home environment.  Any and all measures you DO  to help with will benefit you and your neighbors.

1. Yard waste, such as lawn cuttings and raked leaves, which are present in gutters or

storm drains, prevent water from flowing and create perfect breeding conditions for


2.  Low-lying depressions in lawn areas where water can collect should be filled in.

3.  Leaves and twigs can block roof gutters and eaves troughs and prevent proper water drainage

4.  Stagnant water of any kind is another breeding area for mosquitoes

5.   Open or broken window screens and attic vents offer perfect avenues for mosquitoes to make

their way into your home. Window screens should fit snugly into the frame, vents should

remain closed and for further prevention, windows should also be shut during the hours of dusk

and dawn.

6.  Pool covers can collect water and should be emptied right away. Wading pools need to also

be turned over when they are not in use.

7.   Toys and other objects around the yard should be placed in an area where they won’t collect


8.  Mosquitoes are often attracted to containers of standing water in wheelbarrows or tires that

are left outside. To avoid this, drill holes in the bottom of containers to allow water to flow out

or turn over those items that are not in use.

9.  Ornamental ponds or watering troughs are a perfect source for mosquito breeding.  They should

be cleaned on a weekly basis.

*Bacillus thuringiensis israelensis (Bti) ise used for mosquito larvicide and applied to mosquito breeding areas when mosquito larvae are found in the 1st to 3rd instar life stages.