 It really depends on the kind of food that you've dropped if the food that you've dropped is very I know some people hate this word But moist such as a piece of meat or got forbid like a glob of yogurt A glob of yogurt Bacteria are gonna be able to cling on to that substance a lot more easily than they would be able to cling on to something Relatively more dry like say a piece of bread bacteria actually don't move that fast instead of five seconds I would say you probably have a good 15 or 20