If a party appears to be avoiding service of court documents, a request may be made with the court to, instead of personal service (i.e. giving the document directly to the person), that the document be published in a local newspaper, served on a person believed to frequent the person or mailed to his (or her) last known address.
Should I hire a process server or a sheriff?
For the best service of process, lawyers, firms, businesses, and private individuals should hire a process server rather than a sheriff. Process servers are professionals solely dedicated to successfully serving individuals. Process servers' success rate, speed, and costs are all better than sheriff's.