 powder that's inside. It's going to irritate their eyes, nose, mouth, throat. They will not be able to open their eyes for nearly 30 minutes. They're going to be coughing, gagging. A whole slew of different effects are going to be happening to them to where I guarantee they will not be trying to do what they were trying to do in the first place. That's going to give you time to get to safety. Call the police. Wait for the police to get there and take over the situation before they ever start