Sterling begins weekly mosquito fogging across neighborhoods Friday mornings

Sterling crews began weekly mosquito fogging in alleys and roadways Friday morning, launching a summer program that runs from midnight to 8 a.m. every Friday throughout the season. The city posted the notice May 20 and set the start date for May 22, signaling that the work is meant to continue as a regular neighborhood routine, not as a one-time treatment.

The City of Sterling said it is using CSI 4-4 Mosquito, Fly and Gnat Control for the program. City officials said the product is approved for use in residential areas, athletic fields, gardens, golf courses, parks, playgrounds and other recreational spaces when applied according to label directions, underscoring that the fogging is aimed at the places where families gather, play and spend time outdoors in and around Logan County.

Sterling described the effort as part of its annual summer mosquito control program. That matters for residents planning early Friday activities, especially in blocks and corridors that border alleys and roadways where crews are working before dawn. The city said residents with questions should contact the Sterling Public Works Department at 970-522-9700.

The timing also fits a broader public health pattern across Colorado. Fort Collins says mosquito season can stretch from spring into mid-September, while the Colorado Department of Public Health and Environment says West Nile virus remains active in the state. In 2023, Colorado reported 634 human cases and 51 deaths, a severe season that put the disease on the radar well beyond the Front Range.

The Centers for Disease Control and Prevention describes West Nile virus as the leading cause of mosquito-borne disease in the contiguous United States, which gives Sterling’s fogging program a wider context than routine maintenance alone. For Logan County residents, the immediate takeaway is straightforward: expect the city’s weekly early-morning spray route to continue across neighborhoods through summer, and use Public Works as the first stop for concerns about where crews are operating.