Efficacy of Hydramethylnon and Fipronil Gel Baits with Laboratory and Field Strains of Periplaneta americana (Dictyoptera: Blattidae) in Malaysia

Abstract

Abstract

Hydramethylnon (Siege^®) 2% w/w and fipronil (Goliath^®) 0.05% w/w gel baits were evaluated with laboratory and field strains of Periplaneta americana (L). There was a significant difference in the LC50 and LC90 of fipronil and hydramethylnon for both strains (p < 0.05). Fipronil had a faster residual effect, causing 100% mortality at 9-11 days on adult laboratory-strain and 10-13 days on adult field-strain P. americana; hydramethylnon caused 100% mortality at 11-14 days on adult laboratory-strain and 14-16 days on adult field-strain. Thus, 0.05% w/w fipronil gel bait was more effective than 2.0% hydramethylnon in controlling P. americana.

Keywords : hydramethylnon, fipronil, gel bait, Periplaneta americana