Over time, dirt, dust, pollen, and other debris accumulate on your windows. If not cleaned regularly, these contaminants can cause scratches, streaks, and even damage to the glass. Regular cleaning also helps prevent the build-up of hard water stains, bird droppings, and other tough-to-remove substances. Plus, when windows are clean, they contribute to better energy efficiency by allowing more sunlight into your home, reducing the need for artificial lighting.