Features: 1. Strong decontamination, do not hurt the hand. 2. Clean with water, no cleaning agent needed Instructions: 1. After gently wring , and then wipe the dirt parts, just like using the eraser 2. The dirt will float after wiping , and then wipe with a good absorbent cloth. 3. Do not twist badly after use, gently rubbing wash, drying it and recycling.