Typically no! Just keep them in a cool dark place and you’re all set. If you notice your Superworms/Dubia Roaches have run out of their water source (carrots), it’s not a bad idea to throw some small vegetable chunks into their containers as a moisture source. Both the Hornworms and Solider Fly Larvae have shorter shelf lives in warm temps, so do your best to keep them cool but the fridge is too cold for them!