Californians in farmworker communities gathered Thursday online as well as in-person, calling on the state and county governments to web-post advance warning of agricultural pesticide use, citing the known health impacts of pesticide exposure and the tendency of pesticides to drift far from where they are applied. Currently, no notice is provided to the public. Advocates say that knowing in advance about hazardous chemical use near homes and schools would enable residents to take steps to protect themselves and their families from harm.