Using a stiff-bristle broom or brush can make it a lot easier to clean your driveway. Avoid using a wire brush because it can scar the cement surface, and even create rust stains. Harsh chemicals and a careless application can also mar or destroy the surface. It’s a good idea to test your cleaning strategy on an inconspicuous spot before going full-scale to avoid damaging your driveway.
Start by adding dishwashing liquid to a bucket of hot water. This often works on light stains and dirt that hasn't been ground in over the years. Need something stronger? Try mixing equal parts white vinegar or hydrogen peroxide with warm water in a pail. Use your broom with firm bristles to work the solution into the concrete and then rinse with water. Be sure to avoid applying this solution to nearby greenery because it can harm plants.
If the mixtures above fail to produce satisfactory results, consider using a pressure washer. Start off with a wide spray pattern for the small stuff and narrow the spray as needed for the really tough stains. Once you've covered a few feet, you can compare the before and after results. If you don't own a pressure washer, they are available to rent at local home improvement stores.
With just a little time and elbow grease, increase your curb appeal with a clean and bright driveway!