Use a "prohibited on school grounds, climbing on building or fences, throwing of stones or other missiles, riding bikes or driving of go-karts, autos, etc, flying of model airplanes, walking of dogs, loitering and golf playing, using profane, loud or abusive language ..." sign. Signs give safety a boost.
- Clear sign gets the message across.
- When your facility is compliant, you can focus on more important issues of safety and quality.