Exhibit 21 List of Subsidiaries Rollins, Inc. The following list sets forth the subsidiaries of Rollins, Inc. as of February 29, 2000. Each corporation whose name is indented is a wholly-owned subsidiary of the corporation next above which is not indented.
Corporation Name State/Country of Incorporation ------------------------------------------------------------------------ -------------------------------------- Orkin Exterminating Company, Inc. Delaware Orkin Systems, Inc. Delaware Dettlebach Pesticide Corporation Georgia Kinro Advertising Company Delaware Orkin Expansion, Inc. Delaware Orkin S.A. de C.V. Mexico Orkin International, Inc. Delaware PCO Services, Inc. Canada Rollins Continental, Inc. New York Rollins Expansion, Inc. Delaware Red Diamond Insurance Co. Vermont Rollins Supply, Inc. Delaware Red Diamond Insurance Co. Vermont