Gargling with mouthwash at night can help freshen your breath and kill bacteria that may cause morning breath. However, it is important to note that morning breath is primarily caused by dryness in the mouth and the buildup of bacteria overnight. Gargling alone may not completely eliminate morning breath if you do not address other factors contributing to it. Additionally, maintaining good oral hygiene practices, such as brushing your teeth twice a day, flossing, and using mouthwash regularly can greatly reduce the occurrence of bad breath.
