wait a second.... wouldnt you definitely feel a weight change in terms of a mouse INSIDE of a bag of chips? im also assuming that this bag of fritos was the $.25 variety? do you know how small a bag of $.25 fritos are? MUCH smaller than your average bag of chips. either way, it should have been stopped way before someone OPENED the bag of chips. the kid definitely shouldnt get anything for it. maybe frito lay can hook him up with a few cases of chips and some t-shirts or something but definitely not any money.
ps. mice LOVE chips, especially cheese curls. ive worked at several delis and each time whenever there were traces of a mouse, there were ALWAYS holes bitten into the chip bags. so if you ever pick up a bag of chips and there a small hole it in, its not a rip, its a bite mark