Legal Question in Landlord & Tenant Law in California

In California, the three day notice to pay or quit (or to cure or quit) -must- be in writing and it must be served upon the resident. If the resident is not home and no other adult is home for personal service, and no one knows where the resident is employed, then the process server may post the notice in a conspicuous place -- usually the front door or gate -- with a lot of tape and then mail a copy to the resident at the same address. The process server then completes a proof of service. If the tenant does not then pay or quit after the three days have ended, then the landlord may file an unlawful detainer lawsuit to attempt to regain possession of the premises and rent owed.