Effects of weathering on fabrics treated with permethrin for protection against mosquitoes.
Permethrin-impregnated and untreated fabrics were evaluated for their toxic and repellent effects against Anopheles stephensi and Aedes aegypti after both types of fabrics were subjected to accelerated weathering for 9 weeks, under a simulated wet/tropical environment. The toxic (knockdown) effect of permethrin-impregnated fabrics against both species of mosquitoes diminished rapidly after 1 week compared to the repellent effect. After 6 weeks of weathering, the remaining low amounts of permethrin provided fair protection from mosquito bites; however, no knockdown was observed at those levels. Permethrin-treated fabric was effective in providing protection from mosquito bites and appears to be a means of attenuating both the nuisance effects and, possibly, disease transmission by mosquitoes.
Gupta
R K
RK
Letterman Army Institute of Research, Presidio of San Francisco, CA 94129-6800.
Rutledge
L C
LC
Reifenrath
W G
WG
Gutierrez
G A
GA
Korte
D W
DW
D000818:Animals; D009033:Culicidae; D006801:Humans; D007299:Insect Bites and Stings / Q000517:prevention & control*; D007302:Insect Repellents / Q000032:analysis*; D026023:Permethrin; D011722:Pyrethrins / Q000032:analysis*; D013784:Textiles; D014887:Weather
D007302:Insect Repellents; D011722:Pyrethrins; D026023:Permethrin