Evaluating the Efficacy of Bsph and Bti Treatment on Mosquito Larval Populations
Faculty Mentor Information
Tanner Henke, College of Southern Idaho
Presentation Date
7-16-2026
Abstract
County-level mosquito control relies on larvicide treatment, yet its field efficacy is rarely quantified under operational conditions. Measuring that efficacy directly enables more targeted, evidence-based control strategies. Using standard trapping practices, a previously untreated site was surveyed to establish a baseline. Following larvicide application, weekly surveys were conducted. Three traps were placed evenly throughout the treated area, with two additional traps located 0.5 and 1.0 miles from the treatment site. Adult mosquito abundance decreased each week, with an average weekly reduction of 18% over the five-week study period. No larvae were detected across 40 water samples. These findings support the use of Bsph and Bti as components of an integrated mosquito control program.
Evaluating the Efficacy of Bsph and Bti Treatment on Mosquito Larval Populations
County-level mosquito control relies on larvicide treatment, yet its field efficacy is rarely quantified under operational conditions. Measuring that efficacy directly enables more targeted, evidence-based control strategies. Using standard trapping practices, a previously untreated site was surveyed to establish a baseline. Following larvicide application, weekly surveys were conducted. Three traps were placed evenly throughout the treated area, with two additional traps located 0.5 and 1.0 miles from the treatment site. Adult mosquito abundance decreased each week, with an average weekly reduction of 18% over the five-week study period. No larvae were detected across 40 water samples. These findings support the use of Bsph and Bti as components of an integrated mosquito control program.