I think night crawlers last about several weeks in the fridge, assuming they have fresh compost or soil and are refrigerated. I'm not entirely sure, you would have to check with someone else as well. Mine eats them all before I can even see how long they last so I just make several trips to Walmart. Their definitely not that active until you pop the lid and grab them with tongs

, yours aren't even active when you do that? Dubias are excellent, I'm about to start mine up. Just need a few finishing touches in the bin I'm housing the colony in. Do you have crickets? Try feeding yours crickets (gut loaded) to see if you get a reaction out of him with those since those can sometimes get a feeding response from a lively cricket. Crickets are a pain in the neck though

. Or just try night crawlers again in a few days as John mentioned. Mines on a cricket and night crawler staple diet, until I get this dubia thing going.