Quite a few years ago where I worked, one employee was highly suspected of continuously stealing the lunches of others, but wasn’t ever caught in the act. One other employee got tired of having his lunches stolen. He warned other employees, that he brought in what appeared to be homemade soup. He had loaded it with a rather potent laxative. The suspect was seen rushing to the restroom a short time later. He made it known to the suspect what he had done, & warned him to never steal anyones lunches again. That ended the lunch thefts.
Quite a few years ago where I worked, one employee was highly suspected of continuously stealing the lunches of others, but wasn’t ever caught in the act. One other employee got tired of having his lunches stolen. He warned other employees, that he brought in what appeared to be homemade soup. He had loaded it with a rather potent laxative. The suspect was seen rushing to the restroom a short time later. He made it known to the suspect what he had done, & warned him to never steal anyones lunches again. That ended the lunch thefts.