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1 March 2014 A Comparison of Fourstar™ Briquets and Natular™ Xrt Tablets in a North Shore Suburb of Chicago, IL
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Abstract

Stormwater catch basins are the primary source of mosquitoes targeted by the North Shore Mosquito Abatement District, in the northern suburbs of Chicago. Over a 17-wk period (June to September 2011), 3 clusters of catch basins located within a 0.7-km2 area were monitored weekly with dipper samples of immature mosquitoes. During the 2nd week of monitoring, Natular™ XRT tablets (6.25% spinosad) were applied to northernmost cluster and FourStar™ Briquets (6% Bacillus sphaericus, 1% Bacillus thuringiensis israelensis) were applied to the southernmost cluster; the remaining middle cluster was kept untreated. Following 15 wk of monitoring in 20 basins in each cluster, both Natular and FourStar reduced immature numbers in treated catch basins for 8 consecutive weeks. These results suggest, if effectively timed, a single application of either larvicide may last an entire season.

Copyright © 2014 by The American Mosquito Control Association, Inc.
Justin E. Harbison, Marlon Henry, Christopher Xamplas, Robert Berry, Dhrubajyoti Bhattacharya, and Lara R. Dugas "A Comparison of Fourstar™ Briquets and Natular™ Xrt Tablets in a North Shore Suburb of Chicago, IL," Journal of the American Mosquito Control Association 30(1), 68-70, (1 March 2014). https://doi.org/10.2987/13-6355.1
Published: 1 March 2014
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