Sonoma, CA Public Health Rules: Rodent Control (2026)

020(B). Among the listed conditions, subsection (B)(3)(f) declares it a public nuisance to accumulate, dispose of, keep, scatter, or disperse used or damaged lumber, junk, trash, debris, salvage materials, abandoned or discarded objects or equipment, mattresses, furniture, stoves, refrigerators, sinks, toilets, cabinets, air conditioners, water heaters, other household fixtures, or vehicles and vehicle parts, either where it is visible from a public street, alley, or adjoining property for at least 72 consecutive hours, or where it constitutes a harborage for rodents or pests, or a detriment to the health, safety, and welfare of the occupants of the property, nearby properties, the neighborhood, or the city, regardless of visibility.

Subsection (B)(3)(l) separately reaches overgrown or uncultivated vegetation and dead or hazardous trees likely to harbor rats or vermin left on a property for 72 or more hours. 070, the city attorney or district attorney can pursue abatement by civil action, or the city council can hold a hearing on 10 days' written and posted notice and order the property owner to abate the nuisance; if the owner does not comply, the city may abate it directly and place a lien or special assessment on the property for its costs. 08 that require henhouses, rabbit pens, and beehives to be rodent-proof, and from any Sonoma County vector-control program for the unincorporated Sonoma Valley.