Mosquito Treatment in Redwood City – August 5

The San Mateo County Mosquito and Vector Control District (SMCMVCD) will conduct truck-mounted adult mosquito treatment in Redwood City the night of Wednesday, Aug. 5 between 9 p.m. and 5 a.m. Thursday morning. This treatment is due to the discovery of adult mosquitos affected with West Nile Virus in Redwood City.
TREATMENT AREA: Approximately bounded by Elwood St. to the northeast, Vera Ave. to the southeast, Canyon Rd. to the southwest, and Blandford Blvd. to the northwest.


• Residents in this area do not need to prepare or take any precautions.

• The treatment may be visible in the area as a light fog on the evening of August 5.

• The materials used for fogging pose minimal risk to humans, pets, and the

• The treatment used is called Zenivex E4, and it contains 4% etofenprox, an active
ingredient in many flea treatments for cats and dogs. The remainder of the product is inactive ingredients used to dilute it.
– Apply insect repellents that contain DEET, picaridin, oil of lemon eucalyptus or IR 3535 and follow label instructions.
– Make sure that doors and windows have tight-fitting screens to keep out mosquitoes and repair or replace screens with tears or holes.
– Eliminate standing water and containers that can hold water from around the home.
– Wear long sleeved shirts and long pants when outdoors.
MORE INFORMATION: A map of the treatment area and further information can be found on the District website at Redwood City Residents with additional questions can call the District at (650) 344-8592 Monday through Friday from 8:00 AM to 4:30 PM.