Concrete, while long-lasting and attractive material for lawn ornaments, can become dirty and stained over time, reducing the appeal of the ornament and your yard as a whole. Fortunately, you can clean concrete with common tools and household supplies. A power washer is also helpful for this process. Once the ornament is clean, consider applying a concrete sealer that forms a protective coating on your yard ornament.
Sweep any loose debris off the yard ornament, using the broom. You want to remove dry debris before washing to prevent it from becoming mud.
Scrub the concrete with soapy water, using the soft scrub brush. Use a toothbrush to get into any nooks and crannies.
Treat grease, paint and rust stains with a commercial cleansing product. Allow the product to soak into the stain for 15 to 30 minutes.
Use a power washer to give the ornament a final wash, removing any residual cleaning products. The high-powered jet of water will not be enough to damage the concrete but will blast away any stubborn debris.
Allow the concrete to dry.
Consider adding a protective concrete sealer to your lawn ornament to make future cleanups easier. These can easily be brushed or sprayed onto clean concrete. Lawn ornaments typically require film-forming sealers such as acrylics, polyurethanes and epoxies, which are available from home improvement centres. Apply according to the manufacturer's directions.