Tea tree oil is naturally anti-fungal and antiseptic in nature which helps get rid of harmful odor-causing bacteria in the mouth. Peppermint oil acts as a good natural mouth freshener by imparting a pleasant scent to it.
Cinnamon contains a component called cinnamaldehyde which helps in eliminating odor-causing bacteria in the mouth. The act of sucking the candy stimulates saliva flow, making it effective in combating bad breath.
Note: If the ice cube candies are too big, place them in a clean cloth bag and crush the cubes. Suck on the crushed ice whenever required. You can also add the crushed ice to your drinking water.