Mi-T-Mist is a topical antimicrobial designed to cleanse the mouthpiece and provide a refreshing agent that will remove residue build-up from the instrument. Easy to use:  apply the fine mist spray to mouthpiece and let evaporate (about 45 seconds) To freshen and clean the inside of the instrument, spray liberally into the instrument & immediately swab.  Mi-T-Mist evaporates quickly and assists in eliminating moisture.