Chemical control is the prudent use of specific chemical compounds (insecticides) that reduce mosquito populations. Products are applied when bio-rational methods are unable to maintain mosquito numbers below a level that is considered tolerable or when emergency control measures are needed to rapidly disrupt or terminate the transmission of disease to humans. Larvicides target immature mosquitoes; adulticides are chemicals that reduce adult mosquitoes.

All products are registered with the California Environmental Protection Agency (EPA) and are applied by trained and state-certified technicians.

The District follows strict rules and regulations mandated by federal, state and local agencies.

To see how you can take part in the control of disease-carrying insects and animals, and reduce the need for chemical treatments in your area, check out our How You Can Help section.

For additional product information, please contact the District at 1-800-429-1022 from 7:00 a.m. to 3:30 p.m. Monday - Friday.