Brush your teeth thoroughly   before using the device. • Do not share your Happy   Sleep device with anyone   else including children. • The Happy Sleep device   works best when sleeping on   your side. • If the Happy Sleep device   is uncomfortable or causes   soreness, contact a dental   practitioner. • The Happy Sleep device  must be cleaned before   each use by placing it inside  the storage container with clean, cold water and   denture cleansing tablets   such as Steradent™ for a   maximum of 3 minutes to   avoid damaging the material. • After cleaning the Happy   Sleep device with denture  cleansing tablets, thoroughly   rinse the device and inside of   the storage container in   clean cold water. • Do not use alcohol based   denture cleansing tablets. • Do not brush the Happy   Sleep device with a    toothbrush or use toothpaste   to clean the device. • Do not use hot or boiling   water, harsh chemicals or household cleaning products   such as bleach or ammonia. • Dry the Happy Sleep device   with a clean towel after   cleaning. • Store the Happy Sleep device   in a cool dry place, preferably   inside the container provided. • Keep the Happy Sleep device   out of reach of children and/or   pets. • Attach the outer piece to the   internal mouthpiece whenever   the device is being used. • Inspect the Happy Sleep   device for signs of tears,   cracks, damage, colour   changes, peeling, debonding   of material or obstructions   in the hollow airway tube   at the end of the inner   mouthpiece. Please contact   the manufacturer if any of   these are present. • Keep the Happy Sleep device   out of direct sunlight. • The Happy Sleep device   should be used for up to 12   months of use. • If the Happy Sleep device is   damaged, worn out, expired   or otherwise no longer   required, please return to the   manufacturer. • Test the Happy Sleep device   in your mouth before using   during sleep.