... and adults’ underwear etc. 3, Can be used perennially and repeatedly, have a good function in ... when over it. 5, Keep balls ventilated after used, dry them naturally, repeat the steps above next time. ... machines. 3, Filled with solid ceramic balls, never used as toys for children. 4, Suggestion: no ... washing such as laundry shop, but can be used for antibacterial. 5, Washing separately between different ...