Installation: Rotate warmer's electrical plug, if needed. Unscrew cap from fragrance bottle and insert into warmer. Insert warmer upright into outlet, keep fragrance bottle upright at all times. Operation: Read Safety and Use instructions included with warmer. Adjust warmer intensity to desired setting. Wash hands after handling. Use only Glade PlugIns scented oil refills in Glade PlugIns scented oil warmers.