An Affidavit of Service is also known as a Proof of Service. This document is a signed document provided to you upon completion of serving your documents. In Florida we do not require the Affidavit to be notarized; however, many other states have this requirement that we can comply with. Often times, if the defendant cannot be served the Affidavit provided, will be a Due Diligence Affidavit that will be filed with the Court. This Affidavit will be useful in the event you want to serve the Secretary of State under 48.161 or 48.181 where the whereabouts of the defendant(s) are unknown.