... the washing ability will be better if dipped for 60 minutes. 4, Use 1 washing ball ... over it. 5, Keep washing ball ventilated after used, dry them naturally, repeat the steps above next ... 3, Filled with solid ceramic balls, never used as toys for children. 4, Suggestion: no use to industrial ... washing such as laundry shop, but can be used for antibacterial. 5, Washing separately between different colors ...