Pyrethrum, derived from the chrysanthemum, is effective at controlling mosquitoes.
A major international public health problem is vector-borne disease, including those caused by mosquitoes, such as encephalitis and West Nile virus, according to the Centers for Disease Control and Prevention. Throughout the world, pyrethrum is used to control mosquitoes. Does this Spark an idea?
What Is Pyrethrum
Pyrethrum is a natural botanical insecticide made from the dried flowers of some chrysanthemum species (Chrysanthemum cinerariaefolium, Chrysanthemum coccineum and Chrysanthemum marshalli). Pyrethrum products are available commercially from garden and farm supply shops. Besides offering effective control against mosquitoes, pyrethrum also is used as a garden pesticide to kill aphids, beetles and whiteflies.
Pyrethrum Versus Mosquito
Pyrethrum is a fast-acting, knockdown insecticide that paralyzes mosquitoes on contact. Its active ingredient, pyrethrin, quickly penetrates the insect's nervous system and stimulates repetitive nerve discharges, which keep the mosquito from moving or flying away. If too low a dose is administered, however, some mosquitoes may recover.
Warning
The U.S. Environmental Protection Agency assigns pyrethrum the toxicity classification of "Caution" because it is relatively nontoxic to humans. However, allergic reactions are possible. See a physician immediately if asthmatic breathing, headache, lack of coordination, tremors or convulsions occur.
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