try putting them in layers of newspaper in a cat litter tray in the fridge , layer of paper about 10 worms , layer of paper 10 worms, and so on ,dampen the paper with sea water then put them in the fridge . they still need checking every day or 2 , keeped mine for quite a while , then a day or two before you need then wrap them in a roll in dry newspaper then store them back in the fridge they go bright red .