Should you wash walls in a house?

Yes, you should wash walls in a house periodically, as walls accumulate dust, dirt, grease, fingerprints, and allergens over time, especially in kitchen, bathrooms, and high-traffic areas, washing improves appearance and air quality similar to using HEPA filtration to maintain clean environment. Washing walls is recommended every 1 to 2 years for general maintenance, more often for kitchen walls with grease, bathroom walls with moisture, and homes with pets, smokers, or allergies. Washing removes dust that can affect health, removes stains and scuffs, and prepares walls for painting. Use gentle cleaner like mild dish soap and warm water for most painted walls, test small area first, avoid harsh chemicals on flat paint. For kitchen, degreaser may be needed. Wash from bottom up to prevent streaks, rinse and dry. Do not over-wet drywall to prevent damage. Dust walls first with microfiber or vacuum with brush attachment. Washing walls is especially important before painting to ensure paint adhesion. If walls have mold, use appropriate cleaner and address moisture source. So you should wash walls in house regularly to maintain cleanliness, improve indoor air quality, and keep home looking fresh, similar to maintaining organized and clean storage system like Packout boxes for tools.