Standardized Operational Evaluations of Catch Basin Larvicides from Seven Mosquito Control Programs in the Midwestern United States During 2017

• Published in: Journal of the American Mosquito Control Association Vol. 34; no. 2; pp. 107 - 116
• Main Authors: Harbison, Justin E, Nasci, Roger, Runde, Amy, Henry, Marlon, Binnall, Jim, Hulsebosch, Bridget, Rutkowski, Natalie, Johnson, Haley, Uelmen, Johnny, Bradley, Margret, Newton, Grace, Irwin, Patrick, Bartlett, Dan, Ruiz, Marilyn O'Hara
• Format: Journal Article
• Language: English
• Published: United States American Mosquito Control Association 01.06.2018
• Subjects: Aquatic insects; Basins; Briquets; Control programs; Culicidae; Disease control; Duration; Formulations; Insect control; Larvae; Larvicides; Mosquitoes; Pesticides; United States > US; Illinois; Chicago Illinois; effectiveness; sump depth; larvicide; Catch basin; mosquito
• ISSN: 8756-971X; 1943-6270
• DOI: 10.2987/18-6732.1

During June to September 2017, 7 mosquito control programs in the midwestern United States evaluated a total of 9 catch basin larvicide formulations using similar protocols. Treated basins were monitored among study sites to observe when larvicides failed to control mosquitoes in 25% or more basins within a site. Overall, when monitoring occurred within the maximum label duration of the larvicides, sites treated with a single larvicide tablet or briquet surpassed the 25% fail threshold more often than pellet and granular larvicide formulations. In 438 of the study basins, the depth from sump bottom to catch basin lid was measured. In basins that were deeper than 5 ft (1.5 m), larvicides failed to control mosquitoes significantly more often than those 5 ft or shallower.