What to do after Nebulizing? Care of nebulizer After each treatment, rinse the nebulizer cup with warm water. Shake off excess water and let it air dry. At the end of each day, the nebulizer cup, mask, or mouthpiece should be washed in warm, soapy water using a mild detergent. Rinse thoroughly, and allow to air dry. Can you Nebulize after eating?. The after care for ultrasound fat cavitation is detailed, however it is worth sticking to. The treatment will only work at its optimum if the after care is followed. To ensure your body responds well to ultrasound fat cavitation, drink 1.5L of water prior to and following your treatment. Stagger 2L intake of water over 24 hours, for three days .....