It's the kind of thing that's not cleaned up in the mosquitoes, and we're feeling it in the apartment.

Residents are beginning to feel the consequences of neglected window screens, with nearly no one cleaning them regularly. The accumulation of dust, pollen, seeds, spider webs, insect remnants, and other particles from the surroundings has led to reduced airflow through open windows, and during opening and closing, these collected particles can once again be released into the room. Window screens are not air filters, yet they significantly influence indoor air quality. Often, we hear that window screens “filter the air,” which is not entirely accurate. A standard mesh is primarily designed to prevent insects from entering, while simultaneously trapping larger particles such as household dust, pollen, plant seeds, spider webs, insect remnants, and larger dirt particles carried by the wind. However, the smallest particles, such as traffic-related PM2.5, smoke, or gases, remain unaffected by window screens. The frequency of cleaning varies depending on the environment in which one lives. For most households, it is recommended to clean window screens before the start of summer, gently clean them approximately once a month during the summer, and thoroughly clean them once in autumn after the season ends. If you live near a busy road, a construction site, agricultural land, or an area with high pollen levels, more frequent cleaning, every two to four weeks, is advisable, as the mesh becomes quickly covered with airborne particles in such environments. Cleaning window screens should be done using mild detergent and a soft cloth. The best approach involves using a vacuum cleaner with a soft brush attachment to remove dry dust first. Then, wipe the mesh with a soft cloth or sponge dampened with water and a small amount of gentle detergent. Rinse the screen with clean water and allow it to dry completely. Avoid aggressive scrubbing, as this could damage or tear the mesh. High-pressure cleaners, bleach, or harsh chemicals are not recommended. Signs that indicate the need for immediate cleaning include a gray or yellowish layer on the mesh, visible insect remnants, spider webs in corners, reduced airflow through open windows, or excessive pollen accumulation after rain or wind. Fixed window screens are typically the easiest to maintain due to their minimal moving parts. Cleaning them follows a straightforward process: first, use a vacuum with a soft brush to remove dry dust. Next, wipe the mesh with a soft cloth or sponge slightly dampened with water and a bit of mild detergent. Finally, rinse the screen with clean water and let it dry fully. Avoid vigorous rubbing, as this might stretch or damage the mesh. Light rinsing under a gentle stream of water is acceptable. Roll-up window screens require a bit more care, especially regarding the frame. Dust, sand, small stones, and insect remnants accumulate in the frame, making cleaning necessary. Before cleaning, fully extend the mesh, clean the frame with a narrow brush, and then wipe it with a lightly damp cloth. If the frame becomes dirty, the screen may become harder to roll, and the mesh can wear out faster. Blind-type or harmonic window screens are the most delicate. These have numerous bends where dust and pollen accumulate quickly, so avoid using stiff bristle brushes. The preferred method is to use a vacuum with a soft brush attachment, a soft cloth, or a lightly damp microfiber cloth. Pay special attention to the lower frame, where sand and leaves often collect, potentially complicating movement of the screen. Magnetic and removable window screens are the simplest to clean. Most debris can be removed from outside, followed by a quick rinse under cold water with a mild detergent. Allow the screens to dry in the air before reinstalling. Ensure they are completely dry to prevent weakening of adhesive strips or magnetic joints. Common mistakes during cleaning include using high-pressure cleaners, bleach, or harsh detergents. Producers warn against these practices, as they can damage the protective layers of the screens.