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Plan on a light wall wash about once a month to keep dust, grease, and stains from settling in. If you have already hired a house-cleaning crew, which costs $15 to $40 per hour, ask them to incorporate this task into their regular visit. Most companies discount 15% to 20% when routine wall washing replaces an occasional, more labor‑intensive deep clean.

The best approach to cleaning walls depends on the type of paint you have. For oil-based finishes, mix warm water, a few drops of dish soap, and a splash of white vinegar. Then, wipe the surface with a microfiber cloth and rinse it thoroughly. Latex paint is more delicate—vacuum first, then use a dry sponge to lift any lingering dirt. Both methods preserve the finish without leaving streaks.

Drying is non‑negotiable after washing your walls. Leaving walls damp invites streaks, water spots, and even mold. After wiping, follow up with a clean towel, then use a squeegee or a box fan to remove the remaining moisture. Completely dry walls stay brighter and resist damage such as peeling, warping, or mildew growth.

Nicotine stains cling to walls and need a heavy‑duty approach. Cleaning professionals charge $200 to $1,000 to strip away the sticky residue with commercial degreasers, intensive scrubbing, and thorough rinsing. The service not only lifts the yellow film but also erases lingering odors, leaving the surface fresh and paint‑ready.