Where can i buy an exploding dye packet to catch a thief?

I live in a nursing home. We have a sneek thief that works from 11pm-7am They go in rooms while were sleeping and steals money, jewelry, watches etc: the person has stole $600.00+ The administrator want’s to set a trap.Record the $$ serial #‘s and place them in a satchel with a exploding dye packet. When the thief unzips the pouch and opens the flap 3 seconds later the dye packet will explode in his face as he looks in and on his hands! Please help me find the company who makes the dye packets. thank you… on of the victims