Wash it with mild baby-safe soap and lukewarm water after every use. Most silicone teethers can be sterilised in a steam sterilizer (top rack) or in boiling water for 1-2 minutes. The Animal Teething Rattle cannot be sterilised. On the Sensory Teether, sterilise only the silicone part and never the wooden ring; wipe the ring with a dry or barely damp cloth. Avoid harsh cleaners, keep teethers away from heat, and check for cracks, chips or loose parts before each use, stopping use if any damage is found. Never attach a teether to a cord or clip around your baby's neck.