You should cook and eat them quite a short time after they're killed, because they're not good for you if you do leave them for any length of time after their death.
oh yeah um you're not supposed to i mean you're not supposed to eat them dead i mean well you eat them dead but  right because if if they're dead for too long you can always tell whenever they're cooked if they've been dead for a long time because their tail straightens out and you're not supposed to eat those because they're the bad for you