The third time’s a charm. The City of Laramie Mosquito Control has re-scheduled their aerial mosquito control application to Saturday, June 3 due to mechanical issues with the aircraft spray pump system.

The aerial application of Bacillus thuringensis israelensis, or Bti, was originally scheduled for Wednesday, May 31. Keith Wardlaw, mosquito control crew supervisor for the city, said the application was rescheduled to this morning, however the necessary parts to fix the mechanical issues had not arrived yet, forcing the city to postpone until Saturday morning.

“Even if we receive the parts today, it will be too late to begin the application,” Wardlaw said. “We have rescheduled to tomorrow at daylight.”

Bti is a biological larvicide, which is targeted to control nuisance mosquito larvae in irrigated areas and floodwater southwest and north of Laramie. The area along the Big Laramie River from the city limits near Cottonwood estates to about 10 miles southwest of Laramie is the first area scheduled to be treated. The second is the area north of Curtis Street between Highway 30 and Welsh Lane.

The bacteria does not harm birds, fish amphibians, mammals or other aquatic insects and is environmentally friendly, according to a City of Laramie news release.

No applications will be made within city limits and the City of Laramie currently rates the risk of West Nile infection at level 1, or low risk. Currently, there are no planned applications for adult mosquitoes, as adult mosquito traps indicate Laramie has not reached the threshold to start adult mosquito fogging.


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