Keeping Crickets (alive)

[critters]

The pet store nearby has sold and will eventually be moving. I need to know how to keep crickets alive. I usually will put them in a rubber maid container and some egg carton. Sprinkle some gold fish food (the cricks love it) and a wet paper towel for their drink. However after a few days they all die on me. I don't know where they were ordered from. I do know that they are the non chirping kind. If anyone can give me advice I would GREATLY appreciate it.

Thank you

Critters:)