Pour 1 gallon of warm water in a bucket and mix in 1/2 cup of ammonia, 1/4 cup of white vinegar and 1/4 cup of baking soda. This solution, according to Rogers State University, creates an all-purpose cleaner for interior walls. Use a sponge or soft rag to wash the walls, starting at the ceiling and working your way down to avoid streaking.
Combine baking soda and water to make a liquid paste that removes pencil, marker and crayon marks off of painted walls. Gently rub the paste on the wall with a soft rag or sponge in circular motions and rinse with a clean, wet rag or sponge.
Use plain vinegar to remove sticky substances, such as leftover, sticker adhesive, from walls. Soak a cotton ball or sponge with vinegar and saturate the sticky residue. Let the vinegar soak in for approximately 10 minutes and rub the sticky substance off in circular motions with a rag or sponge. Rinse afterward with a clean, wet rag or sponge.
Mix 1 cup of chlorine bleach with 1 gallon of water and use this mixture to clean mildew off of walls with a rag or sponge. Afterward, use a clean wet rag or sponge to rinse the walls.