All woodwind instruments need to be cleaned properly with a swab after each playing session. All of that moisture will gradually create mold in the instrument if it is not cleaned out! All flute players should have a rod in which a cloth can be attached, and there are a variety of swabs for clarinets and saxophones-although silk will get the best results. Woodwind instruments should be stored at room temperature conditions-cold weather may cause cracks in clarinets that are made of real wood.