I never thought I'd have to know how to clean walls. Why clean walls when you can just paint over them?
Well, two episodes happened right after I had freshly painted our home. I had to clean our kitchen walls after I set the oven on fire which, is a whole other story. I also had to clean our son's bedroom walls after I got a little overzealous with the vaporizer medicine in the humidifier one night.
It's amazing how bad you can screw things up when you're tired! At least no one was hurt in either of these incidents.
Not wanting to have to repaint again, I used the following methods to clean the walls in these two rooms with great success.
Fill one bucket with cleaning solution and one with clean warm to hot water
Dust or vacuum the walls
Work from the bottom to top (dirty water will not drip down over dirty walls causing streaks)
Work a section at a time
Wet your sponge an apply the cleaning solution to the wall
Work the wall from bottom to top in overlapping sections
Grab your other sponge and use for a clean water rinse
After several sections, dry any excess water on the walls with a micro fiber cloth