... kinds of bacteria. 7. Get rid of bad smell in cloth & washing machineHow to use :1,put the ... machine, then put the laundry balls, no need to add any general washing detergents. 2, Collapsible, cuff ... putting into the machine. 3, Start to washing after 15 to 30 minutes’ dipping, washing it as usual ... after 12 months’ using so that to get a better washing ability. Environmentally Friendly Laundry Ball