
Quoting
Legal abatement
Typical abatement procedures are used to gain access to properties to eliminate the source of a mosquito problem (e.g. a neglected swimming pool in the backyard). Local Vector Control Districts prefer to work with landowners and will make every effort to provide help and assistance.
However, if a landowner is unwilling or unable to eliminate a mosquito source (or other nuisance), local districts have the authority to access private property to inspect and abate the source of a problem. They also have the authority to charge a landowner a fee, and place liens upon property (Sections 2053, 2060-2067, and 2855 of the California Health and Safety Code).