I was going to ask, why not just have a couple of guard dogs roam the store? But scratch that idea.
Dog mauls burglar. Burglar sues store. Given that it’s Chicago, burglar wins millions.
Riot gas...........
Fog? Make it CS gas and be done with it.
It makes it harder to know what you’re shooting.
VX would be a better choice.
Pit Bull
Pit Bull kills thief and then the lawyer passes away during sleep