Mouth rinses are liquid solutions used to help clean the mouth and improve oral hygiene. They can help reduce plaque, freshen breath, and prevent gum disease. Some mouth rinses contain active ingredients like fluoride, which strengthens teeth, or antiseptics that kill bacteria. There are different types of mouth rinses available, including those for general use and those specifically designed for conditions like bad breath or sensitive teeth. It's important to follow the instructions on the label and consult a dentist if you have any concerns about which mouth rinse is best for your needs.