If the defendant tries to evade service by staying away from their home, you can serve them at their workplace or another public place. If that does not work, you may need to locate another address to serve them at.
It's not illegal to avoid being served with a process, but it is rarely advantageous.
You can send the court papers by giving the post office copies of the court papers in an envelope, postage prepaid, to be sent to the other party by any form of mail requiring a signed and returned receipt. This is often called Certified Mail, Restricted Delivery by the post office.
Informal probate requires that the deceased had a valid will at the time of death that has not been challenged and died less than 2 years before probate is opened. In an informal probate process, a personal representative is appointed by the court to administer the estate with minimal court supervision.
Newspaper Notice In some jurisdictions, if the person cannot be found it is admissible to place a notice in the newspaper. For this to be considered acceptable, it must be demonstrated that all other options have been used, and that every attempt has been made to serve the legal papers personally.
Unless Rule 4.1(c), (e), (f), or (g) applies, an individual may be served by: (1) delivering a copy of the summons and the pleading being served to that individual personally; (2) leaving a copy of each at that individual's dwelling or usual place of abode with someone of suitable age and discretion who resides there; ...
Rule 4.2(f) allows service by publication when the following circumstances exist: The last known address of the person to be served is outside Arizona, but, (1) despite diligent efforts, the serving party is unable to find the opposing party's current address; or, (2) the opposing party has intentionally avoided ...
The meaning of “personally served” is set forth in Rule 113(a). The person who completed service must promptly prepare an affidavit as proof that a defendant was served, and the proof of service must be filed with the court.