Using a steam cleaner on stairs can be a fantastic way to restore their appearance, but it's crucial to be aware of some safety considerations. Steam cleaners can be hot, so always check the temperature before use and be mindful of any small children or pets nearby. Additionally, if the stairs are carpeted, test the steam cleaner in an inconspicuous spot first to ensure it won't damage the fabric. Finally, keep the steam cleaner moving to prevent over-saturating any area, which can lead to water damage.