When Is The Best Time To Spray For Mosquitoes

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Mosquitoes do not typically transmit diseases such as West Nile virus. Mosquito control is focused on treating standing water and preventing mosquito breeding sites for the summer months when mosquitoes are most active. This includes minimizing areas that collect rainwater, such as gutters or small puddles; eliminating large pools of standing water; removing dead vegetation and debris to remove breeding habitat; and fixing leaks in your exterior pipes around your home. The best time to spray inside homes is in early spring before eggs hatch, which occur between mid-April and late June (see link below). For more information on how pesticides work, please read our Frequently Asked Questions page about pesticides from CDC’s FactSheet: https://www.cdc.gov/mosquito/control/factsheet_pesticides_transmission_and_repellents/.