The Paganini Humidifier is designed to slowly release moisture, then create and maintain the proper humidity to help prevent cracking and warping of your instrument. To use the humidifier: Immerse in water for 15-20 seconds Squeeze lightly to remove excess water Wipe the outside of the tube and ends Insert humidifer in the F (sound) hole of the instrument until all the moisture-release holes are inside.   Check your humidifer daily to make sure the moisture level remains constant. Wait until the humidifier is nearly dry before re-dampening.