Combination of Increased Rain and Hot Temperatures Bring Mosquitoes

May 3, 2017
Contact:  Luz Maria Robles, Public Information Officer
Office:  916.405.2082  |  Cell:  916.416.6337
Elk Grove, Calif.— Spring is here and so are mosquitoes! The Sacramento-Yolo Mosquito &Vector Control District has officially started its mosquito and West Nile virus surveillance program by testing dead birds and mosquito samples that could be infected with the virus putting the public at risk. Increased areas of stagnant water left behind from the winter rain storms and hotter than normal temperatures for this time of the year has increased mosquito populations. “We are seeing a definite increase in the number of mosquitoes collected in the traps set out by our laboratory staff,” indicated Gary Goodman, District Manager. “Some of the traps which were placed in parks and open areas throughout the District contained hundreds of mosquitoes. This is very significant, especially when you consider that it’s only the beginning of May. The mosquito season is just getting started and it looks like it will be a very busy one,” added Goodman.  The combination of stagnant water which leads to many mosquito breeding sources and hot temperatures create the ideal conditions for mosquitoes to grow. In addition, heat accelerates the mosquito lifecycle and they can go from an egg to a flying adult in as little as a week. “Now more than ever we ask that homeowners be diligent about not having stagnant water around their property. One bucket of water can easily breed hundreds of mosquitoes and that’s what we’re trying to avoid” said Goodman. The District reminds residents to check their yard at least once a week and dump water that accumulates in plant saucers, pet dishes, toys, and other containers.
Throughout the state, West Nile virus is also on the rise. Last week, the California Department of Public Health confirmed the first human case of the disease. The illness occurred in Kings County. At this time, West Nile virus has also been detected in three dead birds from San Mateo, Orange and San Diego counties. The most effective protection against mosquito bites is to dress in long sleeves and pants or to wear an effective mosquito repellent while spending time outdoors. Insect repellents should contain DEET, Picaridin or Oil of Lemon Eucalyptus.
To report neglected swimming pools, areas with stagnant water or mosquito breeding problems, please call 1-800-429-1022 or fill out a service request online at

Practice the District D’s of Mosquito Prevention: 
DRAIN standing water that may produce mosquitoes. 
DAWN and DUSK are times to avoid being outdoors.   
DRESS appropriately be wearing long sleeves and pants when outside. 
DEFEND yourself by using an effective insect repellent.  Make sure to follow label directions! 
DOOR and window screens should be in good working condition.
DISTRICT personnel are also available to address any mosquito problems. Call them at 1-800-429-1022 or visit