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How to care for pillbugs
Use a plastic tub or aquarium for housing.
As pillbugs require a damp environment to thrive, you should pick a container that's resistant to water. Go with something made of plastic or glass rather than cardboard.
You can purchase an aquarium at a pet store if you have a lot of pillbugs. If you don't want to spend the money on an aquarium, you can use a plastic tupperware container from your kitchen to house your pillbugs.