Operations | Mosquito & Vector Control Services

The Operations Department conducts mosquito surveillance, vector inspections, black fly control, and treatment services throughout the San Gabriel Valley to help protect public health and reduce vector-borne disease at no extra cost.

A technician inspects a puddle by a roadside, with a service truck parked nearby.

The Operations Department protects public health by implementing mosquito and vector control strategies throughout the San Gabriel Valley. Using Integrated Vector Management (IVM), field staff prevent and reduce mosquito populations through a combination of biological, physical, and chemical control methods.

Operations staff inspect and treat mosquito sources, including neglected swimming pools, ponds, underground storm drains, rivers, flood channels, spreading basins, street gutters, and other standing water sources where mosquitoes develop. These efforts help reduce the risk of mosquito-borne diseases such as West Nile virus, dengue, and Zika.

The department also works closely with city officials, public agencies, and community partners to improve infrastructure, eliminate mosquito conditions, and respond to emerging public health threats throughout Los Angeles County and the San Gabriel Valley.

A woman in work attire demonstrates equipment to a man holding a mosquito guide in a lush garden setting.
Vector control technician working with a homeowner to identify and prevent mosquito breeding sources around the property.
A person in a uniform is examining vegetation among lush green palm leaves, possibly working in environmental maintenance.
Mosquito and vector control technician conducting a field inspection to identify mosquito breeding sources and protect public health.
A white truck is spraying fog at night, likely for pest control, with nearby homes and streetlights illuminating the scene.
Mosquito and vector control vehicle conducting area-wide mosquito treatment to help reduce mosquito populations and protect public health.
A worker wearing gloves and a mask inspects a drainage grate in a plaza, with outdoor seating visible in the background.
Mosquito and vector control technician conducting treatment operations in a commercial area to reduce mosquito activity and protect public health.
A worker in a safety vest is inspecting a manhole, while another directs traffic with a stop sign on a sunny street.
Mosquito and vector control technicians conducting a treatment to under ground storm drains.
May contain: adult, male, man, person, driving, transportation, vehicle, accessories, glasses, baseball cap, cap, clothing, hat, gun, and weapon
Mosquito and vector control technician inputting field data.
A person analyzes maps and data on dual monitors at a desk, with printed charts and a highlighter nearby.
Mosquito and vector control staff reviewing field data and conducting data analysis to support vector surveillance and treatment operations.
May contain: nature, outdoors, wilderness, rock, plant, vegetation, adventure, hiking, leisure activities, person, photography, fishing, water, land, tree, woodland, jungle, clothing, hat, rainforest, walking, soil, glove, face, head, portrait, summer, stream, lake, mountain, mountain range, peak, creek, pond, landscape, and scenery
Mosquito control technician treating breeding areas to reduce black fly populations in the community.
Two workers in protective gear handle chemical containers in the back of a truck, focusing on safety and preparation.
Mosquito and vector control technicians preparing pesticides to state standards.
May contain: clothing, footwear, shoe, boy, child, male, person, car, transportation, vehicle, photography, road, glove, water, hat, pants, face, head, and portrait
Mosquito and vector control specialist conducting routine inspection and surveillance activities in the community.
May contain: clothing, glove, person, worker, footwear, shoe, accessories, belt, adult, male, man, and glasses
Mosquito and vector control technician conducting a pool inspection and treatment to prevent mosquito breeding and protect public health.
May contain: garden, nature, outdoors, adult, male, man, and person
Mosquito and vector control technician conducting a home inspection to identify mosquito breeding sources and protect public health.
A man in work attire walks along a residential street, holding brochures, surrounded by greenery and parked cars.
Mosquito and vector control technician conducting door-to-door community inspections to identify mosquito breeding sources and protect public health.
A woman in work attire demonstrates equipment to a man holding a mosquito guide in a lush garden setting.
A person in a uniform is examining vegetation among lush green palm leaves, possibly working in environmental maintenance.
A white truck is spraying fog at night, likely for pest control, with nearby homes and streetlights illuminating the scene.
A worker wearing gloves and a mask inspects a drainage grate in a plaza, with outdoor seating visible in the background.
A worker in a safety vest is inspecting a manhole, while another directs traffic with a stop sign on a sunny street.
May contain: adult, male, man, person, driving, transportation, vehicle, accessories, glasses, baseball cap, cap, clothing, hat, gun, and weapon
A person analyzes maps and data on dual monitors at a desk, with printed charts and a highlighter nearby.
May contain: nature, outdoors, wilderness, rock, plant, vegetation, adventure, hiking, leisure activities, person, photography, fishing, water, land, tree, woodland, jungle, clothing, hat, rainforest, walking, soil, glove, face, head, portrait, summer, stream, lake, mountain, mountain range, peak, creek, pond, landscape, and scenery
Two workers in protective gear handle chemical containers in the back of a truck, focusing on safety and preparation.
May contain: clothing, footwear, shoe, boy, child, male, person, car, transportation, vehicle, photography, road, glove, water, hat, pants, face, head, and portrait
May contain: clothing, glove, person, worker, footwear, shoe, accessories, belt, adult, male, man, and glasses
May contain: garden, nature, outdoors, adult, male, man, and person
A man in work attire walks along a residential street, holding brochures, surrounded by greenery and parked cars.