Breath Refresher GumRX is used when bad breath is present. We also recommend the breath refresher spray be used with the maximum to aid in the process. Breath Refresher is a spray that you can use whenever your mouth feels dry, or you are concerned about bad breath. Use 1 to 2 sprays coat inside of mouth then either expel or swallow. NOTE: If you have dry mouth or Halitosis you may be interested in trying the Original GumRX as a toothpaste replacement. Keep product away from eyes.