Flush out criminals with fog
Fog cannons are a relatively recent security technology. And as their name implies, they do just what they say - create a ‘cannon’ of dense fog to fill a room when an emergency button is triggered. The fog stops burglars in their tracks as they cannot see the things they came in to steal, and creates a barrier between them and your staff.
This is a non-violent, but highly effective action during robberies, with burglars left disoriented, confused and essentially blinded, in a matter of seconds. Studies show burglars instinctively retreat in this situation.