Efficacy of Pesguard FG 161 against Aedes aegypti, Anopheles minimus and Culex quinquefasciatus by Fogging and Ultra Low Volume space spray technique

Abstract

           The Objective of this study was to Bio-efficacy of Pesguard FG 161® a formulation containing both knockdown and killing agents (d-Tetramethrin 4 % w/w and Cyphenothrin 12% w/w) was tested against Ae. aegypti, An. minimus and Cx. quinquefasciatus by space spray application, thermal fogging at dilution rate of 1 :300 with diesel-based and Ultra Low Volume at dilution of 1:47 with diesel-based. Indoor and outdoor all space spray activity were applied 3 villages for each mosquito species tested in Maerim District, Chiangmai. Indoor test site consisted of closing and opening houses, outdoor is outside the house. A mosquito test cage was hanged in each tested house and 2, 4, 6,8 and 10 meter far from sprayer. The results indicated that the effectiveness of Pesguard FG 161 ® for indoor was effectively against An. minimus 100% mortality by both of space sprays application. Ae. Aegypti and Cx.quinquefasciatus were susceptibly to ULV space sprays only although Ae. Aegypti was low mortality rate 57 % in opening house but did not indicate any statistical difference (P>0.05) between opening and closing house. According outdoor, only Pesguard FG 161® ULV space spray application was proved effective against all 3 mosquito species at 2 meter of spray radius.