The screens on your home are where the elements -- pollution, auto exhaust, tree leaves -- stubbornly grab hold. Cleaning them will help you have a brighter outlook onto the outside world from inside your home. Clean your screens by dipping a damp wire brush into baking soda and scrubbing. Then rinse the screens thoroughly with a damp rag or sponge. If you have removed the screens from the windows, use a hose to rinse them.