Answers: Yes, the clarinet mouthpiece can be easily cleaned in warm water with a detergent. One should clean the clarinet mouthpiece at least once a week using a small brush that can be purchased from most music stores. It is important that you do not wash the entire clarinet in water as this will damage the instrument. Be careful when washing the edges of the face of the mouthpieces, as you may chip away at the material, which will then cause changes to the sound. Be sure to rinse with clean water and dry carefully.