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1 December 2006 Laboratory Evaluations of Insecticide Product Efficacy for Control of Cimex lectularius
David J. Moore, Dini M. Miller
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A susceptible, laboratory strain of bed bug, Cimex lectularius L., was used to determine the efficacy of insecticide products labeled or possessing a site label for bed bug control. Field strain bed bugs also were used to evaluate one insecticide product. The lethal time (LT)50 values calculated for the laboratory strain bed bugs indicated that all of the pyrethroid products killed significantly faster than chlorfenapyr (0.5% [AI]; Phantom: BASF; LT50 = 10 d and 9 h). λ-Cyhalothrin (0.03%; Demand CS; Syngenta) was the fastest acting insecticide (LT50 = 20 min), followed by bifenthrin (0.02% [AI]; Talstar One, FMC; LT50 = 53 min), deltamethrin (0.06% [AI]; Suspend SC; Bayer; LT50 = 61 min), and permethrin (0.05%; Dragnet SFR; FMC; LT50 = 88 min). The field strain bed bugs exposed to deltamethrin had an LT50 value of 14 day 8 h, indicating that the field strain was significantly less susceptible to deltamethrin than the laboratory strain. Chlorfenapyr exposure did not prevent the laboratory strain bed bugs from mating and laying eggs, nor did it prevent the eggs from hatching during the 2-wk exposure period. Surprisingly, none of the insecticides tested, including the pyrethroids, were repellent to laboratory strain bed bugs. Bed bugs rested on pyrethroid-treated panels and remained in contact with the panels until they died (2 h). Chlorfenapyr was also not repellent to bed bugs, but it caused no mortality during the 2-h test period. This study suggests that although pyrethroids were effective for controlling laboratory strain bed bugs, there is the potential for significant resistance in field strains. This study also determined that pyrethroid products were not repellent to bed bugs and would not cause bed bug aggregations to scatter or avoid treated surfaces.

David J. Moore and Dini M. Miller "Laboratory Evaluations of Insecticide Product Efficacy for Control of Cimex lectularius," Journal of Economic Entomology 99(6), 2080-2086, (1 December 2006).
Received: 1 December 2005; Accepted: 1 June 2006; Published: 1 December 2006

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