I advise you to rub gindungo (an African pepper) on your food... They will eat your food once more... Next time they won't even if you offer...
I also had a friend with the same problem... He urinated on a bottle of apple juice, his roommates never again touched anything that belonged to him
I also had a friend with the same problem... He urinated on a bottle of apple juice, his roommates never again touched anything that belonged to him