Northwest Mosquito and Vector Control District will perform an adult mosquito control spray treatment on Thursday, August 20, 2026. The treatment will be conducted East of Archibald Avenue and South of Citrus Street along the Eastvale Trail in the City of Eastvale. The treatment is being conducted in response to elevated adult mosquito abundance in this area.  

The spray application will be conducted between the hours of 3:00 a.m. to 6:00 a.m. 

This area will be treated with Aqua-Reslin, a U.S. Environmental Protection Agency-registered insecticide (EPA Reg. No. 432-796), using truck-mounted Ultra-Low Volume (ULV) sprayers to control adult mosquitoes. Please see the map below for details on the treatment area. 

The shaded area indicates the planned treatment area. 

For more information about this treatment or any other District programs, please call (951) 340-9792, or email office@northwestmvcd.org.