Laboratory and field evaluation of an Indoxacarb Gel against two cockroach species (Dictyoptera: Blattellidae) in Lagos, Nigeria

Indoxacarb gel was evaluated for its efficacy in the laboratory and later in the field against the American (Periplaneta Americana) and German (Blattella germanica) cockroaches. Advion 0.6% indoxacarb gel bait was toxic to both P. americana and B. Germanica. there were no significant differences in the LT₅₀ in treatment levels of 0.25g, 0.5g and 1.0g gel applied to P. americana whereas gel applied at 0.5g to B. germanica had a significantly greater LT₅₀ in the laboratory. The LT₅₀ for both cockroach species ranged from 40.65h to 145.60h. There was no control mortality in this bioassay. In the field, a total of 55 houses were treated with the indoxacarb gel bait from three Local Government Areas (LGA) of Lagos State, comprising: Surulere (22), Alimosho (12), and Shomolu (21). The mean cockroach mortality varied from location to location based on the level of infestation. Mean mortality ranged from 16.58 to 43.48 after two weeks of treatment.