Installation: Rotate warmer's electrical plug, if needed. Unscrew cap from fragrance bottle and insert into warmer. Insert warmer upright into outlet. To remove from Glade Warmers, pull warmer front plastic away from bottle to release. To use in Air Wick Warmers, insert with firm click into warmer. Operation: Read the important safety instructions. Adjust warmer intensity to desired setting. (1 minimum - 5 maximum). Moving/storage: If warmer is removed from outlet, separate bottle from unit and store in upright position. Do not place fragrance oil bottle or cap on painted, finished or plastic surfaces. User maintenance: Fragrance oils may collect on warmer unit over time. To clean, remove warmer unit from electrical outlet and wipe with dry cloth. Wash hands after handling. Use Glade PlugIns Scented Oil refills in Glade PlugIns Scented Oil warmers and Air Wick Scented Oil warmer models ED27, ED28, ED29, ED40, ED44 and DXY80M.