How could mouthwash be good for you?

Bacteria: A clean mouth is always good for you. Mouthwash can help kill that bacterial plaque that we miss when we brush or floss incorrectly.

Adjunct: Mouthwash reduces harmful bacterial levels. Tooth brushing 2x/day for 2 full minutes by the clock removes about 70% of bacteria. Flossing/Water Pik removes a little under 30% from places toothbrush can never reach. Mouthwash may reduce 1-2%. So mouthwash not a substitute for brushing/flossing.