I don't like the urine idea. Too gross. I'd never want to put any food in a fridge if I knew there had been human waste in it.
What I've wanted to do is lace some food with a hot sauce that is so hot that it requires a waiver in order to purchase. When the offender goes to eat the stolen food, he or she will probably scream bloody murder and go running for a liquid ASAP. You've not only identified the offender, you've also taught them a lesson.
Last edited by GreenTeaFrapp; 12-17-2007 at 09:07 AM.
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