Unauthorized occupants (tenants already moved out)

[MK Wang]

Hey BP,

Here is my situation. My original tenant moved out without notifying me while the lease term still active and she moved someone into the unit without my permission. She gave me the bs that she's on some sort of work assignment and these people are just here to do "house-sitting". My lease with her clearly says any guest over 14 days needs the landlord's written permission and they have stayed there for almost a month, so they clearly violated the lease terms. We are going to evict everyone in the house and the original tenant.

Here is my question, since my tenant moved out without providing a forwarding address, how do I proceed with serving her the eviction paper?