no it does not go bad. BUT birds, rats, cats..... animals will get into the bag. they love the stuff, and they will tear holes, eat abunch then rain will get in and disolve it. just put it in some 5 gallon buckets. it should fill up 2.5 of them. keep it air tight and just find a place to store it. then sell some off to other prawners and you will have enough for the season and have a little $$