Kills germs that cause bad breath, plaque and the gum disease Gingivitis. ADA Accepted - American Dental Association. Proven to kill germs by millions on contact. Use FreshBurst Listerine Antiseptic Twice Daily to Help: Prevent and reduce plaque; Prevent and reduce Gingivitis; Fight bad breath; Kills germs between teeth. FreshBurst Listerine Antiseptic has been shown to help prevent and reduce supragingival plaque accumulation and gingivitis when used in a conscientiously applied program of oral hygiene and regular professional care. Its effect on periodontitis has not been determined. Council of Scientific Affairs, American Dental Association.