hard surface

Q: How to clean impurity from a mobile charger and wood?

Q:

1. Is merely wiping with a tissue or cloth considered to remove impurities and make an object paak?

2. If there is impurity on the floor and it dries naturally, is the floor considered paak?

3. Whilst flushing, there is spray from the toilet bowl, and it lands on the toilet seat and sometimes the floor. Is this spray considered to be impure or is it excused.

4. Is a washing machine considered to clean impurities.

5. Can I clean hard surfaces by spraying with water and then wiping instead of pouring?