How do you clean limestone?

Answer 1

A power washer will remove most dirt and staining.

If you don't have access to a power washer, an alternate method is to hand scrub with plain water and a sturdy bristle brush.

If you're dealing with loose rocks and no plant life is in danger, you can use a bleach and water solution for quicker and better results. After removing any large chunks of dirt, place stones in a small, hard plastic child's pool filled with this bleach solution. This will allow you to do several stones at a time with minimal to no scrubbing. Just wait for the bleach to do the work.

Answer 2

To clean limestone, use a mild soap or detergent mixed with warm water and a soft brush or cloth. Avoid using acidic or abrasive cleaners as they can damage the surface. Rinse the limestone thoroughly with clean water and dry it with a soft towel to prevent water spots.