We have spoiled all the food in our fridge once. It was unfortunate because the one time we accidentally left the fridge door ajar was the same time we went out of town for a week. Now if we had this battery operated fridge alarm the smell of foul meat and spoiled milk would not have been what greeted us after a nice vacation. After being exposed to light for more than 30 seconds, this device sounds an alarm to remind you that the door is still open. If you are one of those people that tend to ponder the days events while looking into your fridge then this might not be for you, otherwise you can find it here on sale for $6.99.