If a person does not wash dog saliva with earth, and puts the ritually impure clothes in the washing machine with other clothes, do the other clothes and the washing machine become impure? And is it obligatory to wash the washing machine with earth and water? And does the laundry basket become impure if it touches the clothes that were not washed with earth?

It is not permissible to keep a dog unless for guarding or hunting; otherwise, its owner incurs sin and his reward is diminished. Scholars have differed regarding the obligation of using dust to purify the impurity of a dog, and the Permanent Committee has permitted the use of soap and the like instead of dust. The saliva of a dog is impure, and whatever it touches must be washed seven times, the first of which is with dust or what takes its place, like soap. As for clothes, if they are washed until the trace of impurity is removed, they become pure, provided they are washed seven times, the first of which is with dust or what takes its place.