Well, this is gross, and solidifies my reasoning for never doing Postmates, or any of those food services. You don't know who's sippin or eating your food...and well, here's some proof. And btw, why do you need someone to go get you a caramel macchiato from Starbucks anyway? Get up and go get it!!!
Maybe this story, by David Goldstein will help encourage you to get it yourself from now on, as he catches the delivery people in the act of sippin soda, and eating fries, straight from the bag, as they deliever to houses. Ew.