The answer to 'how often to stone walkway' is that stone walkways typically require maintenance and cleaning every 1-2 years to keep them looking their best. Over time, dirt, leaves, and other debris can accumulate on the surface, making the walkway appear dirty and uneven. Regular cleaning with a stiff-bristle broom or power washer can help remove this buildup and restore the walkway's original appearance.
In addition to cleaning, it's also important to inspect the walkway for any cracks, uneven stones, or other damage that may need to be repaired. This should be done at least once a year, and any necessary repairs should be made promptly to prevent further deterioration and ensure the safety of those using the walkway.