Lawrence announces chemical to kill mosquitoes

This undated handout photo provided by the Agriculture Department shows a female yellowfever mosquito probes a piece of Limburger cheese, one of few known mosquito attractants. Despite our size and technological advantages, we still can't seem to win our ancient blood battle with the pesky and lethal mosquito. In much of the nation this summer you can tell just by looking at the itchy bumps on our arms. A large section of the United States seems like it is getting eaten alive worse than usual this summer because of quirks in recent weather. It may be the worst in the Southeast, where after two years of drought when mosquito eggs laid dormant, there have been incredibly heavy rains much of the spring and summer. Rainfall in parts of North Carolina is more than two feet above normal this year. The rains have revived the dormant eggs, so the region is essentially getting three years' worth of mosquitoes in one summer. (AP Photo/Peggy Greb, USDA)

State Rep. John Lawrence, R-13, of West Grove announced that the chemical Bti for killing mosquito larvae is available in stores for personal. At least two mosquitoes have been found positive for West Nile Virus in Chester County this summer.

DEP and county mosquito control professionals have been using Bti, a naturally occurring bacteria, to kill mosquito larvae for years. This material is now becoming widely available for you to buy and use yourself at home.

Bti can be purchased in small, donut-shaped form, often called “mosquito dunks”, which are useful in small areas of standing water, such as a birdbath or small puddle of water that may gather in a low spot on your property. A granular form of Bti is available, and effective for larger areas, such as backyard ponds.

Advertisement

Bti can be purchased in many lawn and garden, outdoor supply, and home improvement stores. The great thing about this bacteria is that it kills only mosquito and black fly larvae. It is not harmful to people, pets, aquatic life (such as fish) or plants.

The best way to control mosquitoes is still to get rid of standing water on your property. And, make sure you follow all label instructions carefully if you use Bti at home.