What is the first step in dealing with spills and wet floors?

The first step in dealing with spills and wet floors is to put up a sign warning others. This action prioritizes the safety of both customers and employees by alerting them to the potential hazard before any cleaning begins. By placing a warning sign, you can help prevent accidents, such as slips and falls, which are common in situations involving wet floors.

Addressing the other options, cleaning it up immediately before warning others can lead to increased risk of injury. Waiting until closing time is not practical, as spills could pose a danger to patrons throughout the day. While asking for help might be beneficial later in the process, the immediate priority is to ensure that others are aware of the hazardous condition. Thus, the correct initial step is to provide a clear warning to safeguard everyone's well-being.