All interested parties, including natural parent(s), shall receive proper notice of pending termination and/or adoption proceedings. A copy of the relevant petition and subsequent hearing notice should be served on all interested parties, e.g. persons with parental rights to the minor child(ren) involved. Acceptable methods of service include personal service or certified mail, return receipt requested, restricted delivery. Proof of service should be filed with the court and/or submitted at the time of the hearing.