While a good mouthwash can help in the fight against gum disease, cavities and bad breath, it simply can’t remove plaque as well as floss can. Plaque is sticky and adhesive, like glue, and can’t be removed unless you floss and put some elbow grease into it.
Flossing displaces the destructive colonies of bacteria growing against your teeth and gums. When these bacterial colonies, or plaque, are allowed to grow freely, they eventually cause gum disease and leads to a higher risk of heart disease, stroke, high blood pressure and other serious ailments. Flossing disrupts their efforts and prevents them from building a stable home (calculus) in your mouth. And flossing a couple times a week won’t do the job -- bacteria works fast and they’ll re-colonize before you know it.