Is it necessary to wash each piece of clothing that a mouse has defecated on separately, knowing that a mouse has entered the closet and defecated in it excessively, and is the mouse impure?

Mouse droppings are impure, and clothes soiled by them must be purified. It is not necessary to wash impure clothes separately; rather, they may be put together in the washing machine, with pure water poured over them until their purity is achieved or strongly presumed. It is also permissible to put impure clothes together with pure ones in the washing machine.