Many lucky people across the US today will be presented with more food than they can handle, and that means... leftovers. Whether you're an overstocked host or a guest who's lucky enough to get the tupperware treatment filled with extra uncooked ingredients, there's a chance those extra eats will drag on for days, or even weeks. As time marches on, it helps to have a second opinion on the actual freshness of those vittles. That's where Foodsniffer can help out. It's an app-connected handheld sensor that scans raw food for volatile organic compounds (VOCs), which are emitted from decomposing beef, poultry and fish. It can verify if food is still fresh, on its way out or definitively spoiled. Foodsniffer has provided us with three units for a trio of lucky readers this week, saving them from potential stomach trouble over dubious leftover consumption. All you need to do is head to the Rafflecopter widget below for up to three chances at winning!

Winners: Congratulations to Dennis E. of Irvine, CA; Sidharth P. of Jersey City, NJ and Jorgen K. of Winnipeg, CA!