To Clean:
Use hot, soapy water and rinse thoroughly with hot water. For tough cleaning jobs, add 1/4 cup of baking soda to 3/4 cup of water per liter and shake for 30 seconds. Add 1/4 cup lemon juice and wait a moment for the effervescence to subside. Shake 10 seconds and vent by loosening cap away from face. Repeat shaking and venting three times. Expel as much air as possible, cap bottle, and allow to soak 20 minutes. Rinse thoroughly with hot water. Caution: When adding lemon juice to baking soda, effervescence occurs and will cause pressure to build inside your reservoir. Vent often.
To Disinfect:
Add one ounce of unscented household bleach (such as Clorox Regular or Clorox Ultra) to one liter of clean water. Mix for 10 seconds. Fill drinking tube with solution and leave overnight. Rinse thoroughly and air dry.