The City of Prince George operates a Nuisance Mosquito Abatement program to reduce mosquito annoyance for residents of and visitors to the City. The immediate and most urgent responsibility of the program is to control nuisance mosquitoes at a level that is tolerable to visitors, residents and livestock, especially during the peak mosquito season in April, May and June. A list of known breeding sites has been compiled and is used as the back bone for monitoring and treatment activities.