... to mop after pen cleaning, then dry it in the air naturally.4.For much or stubborn stains, please wash by ... washing ball or washing detergent after cleaning by the pen. ApplicationVery effective to remove the stubborn stains on the clothes instantly, such ... tea, lipstick, juice, etc; it is quite effective on cleaning blood stains, also can remove abnormal flavour and sterilize. Storage:Sealed, stored ...