La. Code Civ. Proc. art. 1234
Current with changes from the 2024 legislative session from Acts 3, and 6-104
Domiciliary service is made when a proper officer leaves the citation or other process at the dwelling house or usual place of abode of the person to be served with a person of suitable age and discretion residing in the domiciliary establishment.
La. C.P. § 1234