How safe is the Jammer product in school?

The Jammer does not go after the human body to stop the shooting. The Jammer
goes after the firearm by instantaneously stopping the firearm from shooting.
The Jammer can be compared to having a pair of scissors in a classroom,
completely harmless until used against another.

Furthermore, while scissors can be used by students for class projects the Jammer should always be in the hands of a school employee.

Non-toxic Non-explosive Fire Hazard: Not considered flammable 

Enough ingredients for 2 plus applications.