Mi-T-Mist is a topical antimicrobial designed to cleanse the mouthpiece. Easy to use: spray the fine mist on the mouthpeice then let evaporate (about 45 seconds). Mi-T-Mist evaporates quickly and assists in eliminating moisture and bacteria. Don’t be fooled by the copycats trying to duplicate Roche-Thomas’ look and feel with their ‘Green Stuff’, it doesn’t compare. Roche-Thomas is the originator of the mouthpiece cleanser and its high standards for quality and great products is why it is the industry leader. Manufactured in the USA.