I have kept wax worms in the fridge for up to 2 weeks before a few start dying off. But i have had them last way longer. The cold just slows their metabolism you will have some casualties. I ordered 500 crickets from them and they came all 100% alive and not one DOA. But i have learned that you cant feed off that many crickets before they start getting big and getting too big for my chameleon to eat them. So now I will just go to the store and get them. LLLReptile is great to order from i have ordered lots of stuff from them and they always send it on time and their customer service is great.