Cleaning of cpap and bipap machine is very important, you should clean your device once a week. Cleaning your mask should be done according to the directions in the mask user handbook. Use a light detergent to wash the humidifier and air tubing in warm water. Thoroughly rinse the humidifier and air tubing, then dry away from direct sunshine and/or heat. Wipe the Bipap machine or cpap's outside with a dry towel.